The Big Bang Theory — Season 2 Episode 21
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S02E21
The Vegas Renormalization
Leonard and Koothrappali escort a heartbroken Wolowitz to Las Vegas, and Sheldon becomes locked out of his apartment and must stay with Penny.
Comedy
Episode
-
S01E01
24 Sep 07
★ 7.4
23m
Pilot
Brilliant physicist roommates Leonard and Sheldon meet their new neighbor Penny, who begins showing them that as much as they know about science, they know little about actual living.
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S01E02
1 Okt 07
★ 7.4
21m
The Big Bran Hypothesis
Leonard volunteers to sign for a package in an attempt to make a good impression on Penny, but when he enlists Sheldon for help, his attempt at chivalry goes terribly awry.
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S01E03
8 Okt 07
★ 7.1
22m
The Fuzzy Boots Corollary
Leonard asks a woman out after he finds out that Penny is seeing someone.
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S01E04
15 Okt 07
★ 7.5
21m
The Luminous Fish Effect
Sheldon's getting fired forces him to explore what life has to offer outside physics, leaving Leonard to take drastic action to snap his friend out of his funk.
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S01E05
22 Okt 07
★ 7.6
20m
The Hamburger Postulate
Fearing he's wasting his time on Penny, Leonard ends up making a connection with Leslie.
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S01E06
29 Okt 07
★ 7.6
21m
The Middle-Earth Paradigm
Penny hosts a Halloween party, putting Leonard, Sheldon, Wolowitz, and Koothrappali through a new test of their social skills.
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S01E07
5 Nov 07
★ 7.8
21m
The Dumpling Paradox
With Wolowitz AWOL with one of her friends, Penny's recruited to fill in for him on the guys' Halo team
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S01E08
12 Nov 07
★ 7.5
20m
The Grasshopper Experiment
Raj's parents set him up on a blind date, but just when he discovers he can talk to her, she shows interest in Sheldon.
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S01E09
17 Mar 08
★ 7.6
19m
The Cooper-Hofstadter Polarization
When they're invited to present at a physics conference, Sheldon's reluctance to share the credit leads to a tiff between him and Leonard, and Penny's intervention only exacerbates the situation.
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S01E10
24 Mar 08
★ 7.5
21m
The Loobenfeld Decay
Leonard and Sheldon each lie to avoid seeing Penny's concert, but Sheldon's is a bit too complicated for his own good.
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S01E11
31 Mar 08
★ 7.7
22m
The Pancake Batter Anomaly
With his friends knowing how sour he acts when sick—and avoiding him as a result—Sheldon is nursed by Penny, who hasn't a clue what she's in for.
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S01E12
14 Apr 08
★ 7.3
20m
The Jerusalem Duality
With Sheldon rattled over meeting Dennis, a 15-year-old physicist who's smarter than he, Leonard helps him look for a way to debunk Dennis's research.
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S01E13
21 Apr 08
★ 7.7
22m
The Bat Jar Conjecture
Sheldon finds himself booted from the gang's Physics Bowl team and replaced with Leslie, so he forms his own team, hoping to prove he's superior.
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S01E14
28 Apr 08
★ 7.5
20m
The Nerdvana Annihilation
When delivery of another collectible leads to Penny's lashing out at Leonard, he decides it's time to give up his habit, much to his friends' protestation.
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S01E15
5 Mei 08
★ 7.5
22m
The Pork Chop Indeterminacy
The rest of the gang fall for Sheldon's twin sister, and Leonard's plan to win her heart is derailed when Sheldon declares he'll be the one to decide who can date her.
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S01E16
12 Mei 08
★ 7.6
20m
The Peanut Reaction
Penny wants to throw a surprise party for Leonard, but Sheldon's indulgence at an electronics store throws her off-track.
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S01E17
19 Mei 08
★ 7.9
20m
The Tangerine Factor
Penny's break-up spurs Leonard to summon the courage to ask her out, and each goes to Sheldon for advice on their upcoming date.
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S02E01
22 Sep 08
★ 7.8
22m
The Bad Fish Paradigm
Penny's first date with Leonard goes awry; Penny finds Sheldon to be an unwilling confidant.
-
S02E02
29 Sep 08
★ 7.6
21m
The Codpiece Topology
A jealous Leonard reacts to Penny's new guy by rebounding with Leslie.
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S02E03
6 Okt 08
★ 7.9
21m
The Barbarian Sublimation
Sheldon creates a monster when he introduces Penny to online gaming.
-
S02E04
13 Okt 08
★ 7.6
21m
The Griffin Equivalency
Raj gets an inflated ego and makes a play for Penny after being referenced in a magazine article.
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S02E05
20 Okt 08
★ 7.6
20m
The Euclid Alternative
Leonard and his friends stage an intervention to force Sheldon to face his fear of driving.
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S02E06
3 Nov 08
★ 7.9
21m
The Cooper-Nowitzki Theorem
Sheldon and the gang are confused when a young grad student is attracted to him.
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S02E07
10 Nov 08
★ 8.0
21m
The Panty Piñata Polarization
When Sheldon bans Penny from the apartment for numerous minor infractions, she decides to retaliate.
-
S02E08
17 Nov 08
★ 7.5
20m
The Lizard-Spock Expansion
Leonard inadvertently steals away the new woman Wolowitz thinks is the love of his life.
-
S02E09
24 Nov 08
★ 7.4
21m
The White Asparagus Triangulation
Sheldon is thrilled when Leonard starts dating a woman who meets Sheldon's stringent standards.
-
S02E10
8 Des 08
★ 7.0
21m
The Vartabedian Conundrum
Leonard asks Penny for advice when his new relationship starts moving too fast.
-
S02E11
15 Des 08
★ 8.2
21m
The Bath Item Gift Hypothesis
Penny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.
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S02E12
12 Jan 09
★ 7.5
21m
The Killer Robot Instability
Penny's criticism of Wolowitz's romantic life pushes him into depression and AWOL for a fighting robot battle the rest of guys are depending on him for.
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S02E13
19 Jan 09
★ 7.6
21m
The Friendship Algorithm
Sheldon creates a scientific procedure for making friends.
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S02E14
2 Feb 09
★ 7.5
21m
The Financial Permeability
Sheldon's solution to Penny's financial difficulty leads to a confrontation between Leonard and Penny's ex-boyfriend.
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S02E15
9 Feb 09
★ 8.2
21m
The Maternal Capacitance
Leonard and Penny are drawn together after a disastrous visit from Leonard's mother.
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S02E16
2 Mar 09
★ 7.5
21m
The Cushion Saturation
A paintball game leads to a fight between Sheldon and Penny, and romance for Leslie and Wolowitz.
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S02E17
9 Mar 09
★ 7.6
21m
The Terminator Decoupling
Leonard, Sheldon and Wolowitz are ecstatic to learn that a famous science-fiction actress (Summer Glau) is on board the train they are taking to San Francisco.
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S02E18
16 Mar 09
★ 7.6
20m
The Work Song Nanocluster
Penny's home business turns into a complete nightmare when Sheldon takes over.
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S02E19
30 Mar 09
★ 7.6
20m
The Dead Hooker Juxtaposition
Penny squares off with a new beautiful female neighbor who may become the building's "new Penny."
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S02E20
13 Apr 09
★ 7.6
20m
The Hofstadter Isotope
A fellow comic book enthusiast's hitting on Penny leads to Leonard and Howard going to a bar's Ladies' Night.
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S02E21
27 Apr 09
★ 7.5
22m
Sedang diputar
The Vegas Renormalization
Leonard and Koothrappali escort a heartbroken Wolowitz to Las Vegas, and Sheldon becomes locked out of his apartment and must stay with Penny.
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S02E22
4 Mei 09
★ 7.5
19m
The Classified Materials Turbulence
Penny's second date with Stuart sees her making a comment that gives Leonard new hope for a relationship with her. Wolowitz realizes there's a crucial error in a NASA project he's working on.
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S02E23
11 Mei 09
★ 7.5
21m
The Monopolar Expedition
The guys' plan to work over the summer at the North Pole makes Penny revaluate her feelings for Leonard.
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S03E01
21 Sep 09
★ 7.9
22m
The Electric Can Opener Fluctuation
When Sheldon learns the guys tampered with his expedition data he got from the arctic, he leaves to Texas in disgrace. This results in the guys following him, which threatens Leonard's hope for some romantic time with Penny and the guys' friendship with Sheldon.
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S03E02
28 Sep 09
★ 7.4
21m
The Jiminy Conjecture
Leonard and Penny struggle to recover from an awkward first hookup while Sheldon and Howard stake their best comic books on a bet to determine the species of a cricket.
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S03E03
5 Okt 09
★ 7.5
20m
The Gothowitz Deviation
Howard and Raj visit a Goth nightclub to pick up women while Sheldon attempts to build a better Penny using chocolate-based behavior modification.
-
S03E04
12 Okt 09
★ 7.5
21m
The Pirate Solution
Raj must find a new job or be sent back to India, but Sheldon has a solution, which leaves Leonard and Penny dealing with Howard as a third wheel.
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S03E05
19 Okt 09
★ 7.7
21m
The Creepy Candy Coating Corollary
After overhearing that Wil Wheaton is entering a trading-card competition, Sheldon decides to enter it himself. Meanwhile, Penny sets up one of her friends on a date with Wolowitz.
-
S03E06
2 Nov 09
★ 7.1
20m
The Cornhusker Vortex
Sheldon becomes Leonard's teacher in order to understand football, while an incident with flying a kite threatens Howard and Raj's friendship.
-
S03E07
9 Nov 09
★ 7.3
19m
The Guitarist Amplification
A squabble between Leonard and Penny sees Sheldon playing mediator, though out of his own incovenience from the sitiation rather than altruism.
-
S03E08
16 Nov 09
★ 8.4
21m
The Adhesive Duck Deficiency
With Leonard, Howard and Raj away camping in the desert, an injured Penny has only Sheldon to rely on.
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S03E09
23 Nov 09
★ 7.8
19m
The Vengeance Formulation
After he's humiliated on National Public Radio, Sheldon vows to destroy Kripke, while Wolowitz tries not to destroy his new relationship with Bernadette.
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S03E10
7 Des 09
★ 7.9
21m
The Gorilla Experiment
Penny gets help from Sheldon in order to understand what Leonard's work is, while Wolowitz develops a jealousy when Leonard starts hanging out with his new girlfriend.
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S03E11
14 Des 09
★ 7.6
20m
The Maternal Congruence
A Christmas visit from his mother has Leonard discovering she's kept a lot of news from him that she shares with Sheldon and worrying if she'll approve of his romance with Penny.
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S03E12
11 Jan 10
★ 7.9
19m
The Psychic Vortex
Leonard is aghast to find out a secret of Penny's: she believes in psychics. Meanwhile, Sheldon tries to assist Koothrappali in picking up a girl at a university mixer.
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S03E13
18 Jan 10
★ 7.7
20m
The Bozeman Reaction
When their apartment is robbed, Leonard and Sheldon turn to their friends to create a state-of-the-art security system.
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S03E14
1 Feb 10
★ 8.0
19m
The Einstein Approximation
Sheldon's search for the answer to a physics problem leads him to work at the Cheesecake Factory with Penny.
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S03E15
8 Feb 10
★ 7.8
21m
The Large Hadron Collision
Leonard can only bring one guest on a trip to see CERN's Large Hadron Collider (the world's largest and highest energy particle accelerator) in Switzerland on Valentine's Day.
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S03E16
1 Mar 10
★ 7.9
21m
The Excelsior Acquisition
Sheldon winds up in traffic court when he gets a ticket because of Penny.
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S03E17
8 Mar 10
★ 8.0
20m
The Precious Fragmentation
When the guys find a ring from "The Lord of the Rings" at a garage sale, it threatens to tear them apart.
-
S03E18
22 Mar 10
★ 8.0
21m
The Pants Alternative
Sheldon's friends come to his aid when his fear of public speaking stands between him and a coveted award.
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S03E19
12 Apr 10
★ 7.4
21m
The Wheaton Recurrence
A fight between Leonard and Penny threatens their relationship, while Sheldon battles Wil Wheaton in bowling.
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S03E20
3 Mei 10
★ 7.8
20m
The Spaghetti Catalyst
When Leonard and Penny aren't speaking, Sheldon goes to extremes to keep them both happy.
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S03E21
10 Mei 10
★ 7.4
21m
The Plimpton Stimulation
Leonard and Sheldon compete for the attention of a famous female physicist.
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S03E22
17 Mei 10
★ 8.4
20m
The Staircase Implementation
Leonard tells Penny about how he met Sheldon for the first time...and what happened to the elevator.
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S03E23
24 Mei 10
★ 7.8
20m
The Lunar Excitation
While Penny worries that dating Leonard has ruined her for normal guys, Wolowitz and Koothrappali search for Sheldon's perfect match online.
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S04E01
23 Sep 10
★ 7.9
21m
The Robotic Manipulation
Penny tags along on Sheldon's first ever date; Wolowitz finds a new use for a robotic arm.
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S04E02
30 Sep 10
★ 7.7
21m
The Cruciferous Vegetable Amplification
Realizing he will not live long enough to download his consciousness into a robot body, Sheldon tries to extend his life span.
-
S04E03
7 Okt 10
★ 7.5
21m
The Zazzy Substitution
The guys are concerned as Sheldon searches for an alternative to human companionship.
-
S04E04
14 Okt 10
★ 7.6
20m
The Hot Troll Deviation
An embarrassing secret of Wolowitz's comes to light, while Sheldon and Raj have a small war at work.
-
S04E05
21 Okt 10
★ 7.4
21m
The Desperation Emanation
Leonard realizes he’s the only one without a girlfriend, while Sheldon wants to get rid of his.
-
S04E06
28 Okt 10
★ 7.5
22m
The Irish Pub Formulation
Leonard keeps an affair a secret from Sheldon, Howard and Raj.
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S04E07
4 Nov 10
★ 7.6
21m
The Apology Insufficiency
Sheldon's answers during an FBI interview put Wolowitz's security clearance in jeopardy.
-
S04E08
11 Nov 10
★ 7.8
19m
The 21-Second Excitation
While the guys camp in line for a long-awaited movie screening, Penny and Bernadette invite Amy to her first slumber party.
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S04E09
18 Nov 10
★ 7.9
21m
The Boyfriend Complexity
Penny asks Leonard to lie to her father, while Howard, Raj and Bernadette pull an all-nighter at a telescope.
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S04E10
9 Des 10
★ 7.4
20m
The Alien Parasite Hypothesis
Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.
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S04E11
16 Des 10
★ 7.9
20m
The Justice League Recombination
The guys find a "super" use for Penny's new boyfriend, Zack, when they enter a costume contest as the Justice League.
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S04E12
6 Jan 11
★ 7.4
21m
The Bus Pants Utilization
Leonard's idea for a smartphone app derails his friendship with Sheldon.
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S04E13
20 Jan 11
★ 7.8
21m
The Love Car Displacement
Bernadette runs into her ex-boyfriend while attending a science event with Wolowitz.
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S04E14
3 Feb 11
★ 7.5
21m
The Thespian Catalyst
Hoping it will make him a better teacher, Sheldon has Penny give him acting lessons. Raj has fantasies about a friend's girlfriend.
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S04E15
10 Feb 11
★ 7.4
20m
The Benefactor Factor
A wealthy donor to the university makes Leonard consider how far he's willing to go for the sake of science.
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S04E16
17 Feb 11
★ 7.5
20m
The Cohabitation Formulation
As Wolowitz contemplates taking things with Bernadette to the next level, Leonard rekindles his relationship with Raj's sister.
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S04E17
24 Feb 11
★ 7.6
21m
The Toast Derivation
Sheldon becomes concerned when everybody begins to hang out at Raj's apartment and discovers Leonard is the center of the group.
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S04E18
10 Mar 11
★ 7.5
21m
The Prestidigitation Approximation
Sheldon is baffled by Wolowitz's magic trick. Meanwhile, Leonard realizes dating Priya may make it impossible to continue being friends with Penny.
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S04E19
31 Mar 11
★ 7.6
21m
The Zarnecki Incursion
Sheldon's online-game account is hacked by Todd Zarnecki, who then proceeds to steal all his items prompting the guys to go on a quest to retrieve them. Penny, Bernadette and Amy discuss how Penny groomed Leonard to be willing to try various things and more adventurous boyfriend... for some other woman — Priya.
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S04E20
7 Apr 11
★ 8.0
21m
The Herb Garden Germination
Sheldon and Amy decide to start several rumors about the others as a test. Meanwhile, Howard takes his relationship with Bernadette to even higher level.
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S04E21
28 Apr 11
★ 7.3
21m
The Agreement Dissection
When Leonard spends too much time in the shower with Priya, Sheldon charges Leonard with two violations of the roommate agreement. However, before he can get too far, Priya uses her skills as a lawyer to nullify the charges due to the agreement's vague wording, much to Sheldon's dismay. When the guys take advantage of Priya's skills in order to eat Greek food on pizza night, Sheldon goes to Penny, who invites him to a girls' night out with Amy and Bernadette, which Sheldon agrees to after Penny mentions that they may be talking trash about Priya. After the girls drink some cocktails, they decide to take Sheldon dancing, which Sheldon reluctantly goes along with. After dancing, Sheldon takes an intoxicated Amy back to her apartment and as well as talking about Priya, meets a monkey who is addicted to smoking cigarettes. Amy tells Sheldon not to give in to Priya's law skills, before kissing him and going to her bathroom to vomit.
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S04E22
5 Mei 11
★ 7.0
21m
The Wildebeest Implementation
Raj attempts to cure his social anxiety disorder while Penny uses Bernadette to spy on Leonard and his girlfriend.
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S04E23
12 Mei 11
★ 7.6
20m
The Engagement Reaction
When Howard finally breaks the news to his mom that he's engaged to Bernadette, it lands her in the hospital.
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S04E24
19 Mei 11
★ 7.5
21m
The Roommate Transmogrification
When Bernadette receives her PhD, Wolowitz feels emasculated. Raj and Leonard swap places and Penny does something she's regrets.
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S05E01
22 Sep 11
★ 7.5
21m
The Skank Reflex Analysis
Penny is worried with how damaged her friendship with the guys will be in the aftermath of her sleeping with Raj while Sheldon becomes the leader of the paintball team.
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S05E02
22 Sep 11
★ 7.7
20m
The Infestation Hypothesis
A fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya.
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S05E03
29 Sep 11
★ 7.3
20m
The Pulled Groin Extrapolation
Leonard and Amy get to know each other better, while Howard and Bernadette spend the weekend with Mrs. Wolowitz.
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S05E04
6 Okt 11
★ 7.4
20m
The Wiggly Finger Catalyst
Penny plays Matchmaker for Raj, which results in him finding a girl he is comfortable talking to.
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S05E05
13 Okt 11
★ 7.7
21m
The Russian Rocket Reaction
Sheldon and Leonard get invited to a party at Wil Wheaton's house, and Howard gets an out-of-this-world opportunity.
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S05E06
20 Okt 11
★ 7.4
21m
The Rhinitis Revelation
Sheldon's mother, Mary Cooper, comes to visit, but Sheldon is annoyed that she also spends time with the rest of the gang, instead of catering to his every demand.
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S05E07
27 Okt 11
★ 7.5
20m
The Good Guy Fluctuation
A cute comic book artist puts Leonard and Priya’s relationship to the test, while Sheldon tries to scare the guys for Halloween.
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S05E08
3 Nov 11
★ 7.3
21m
The Isolation Permutation
Amy becomes heartbroken when she discovers that Penny and Bernadette went wedding dress shopping without her.
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S05E09
10 Nov 11
★ 7.4
21m
The Ornithophobia Diffusion
Leonard and Penny try hanging out as friends on a 'non-date', but end up purposely ruining each others chances with perspective dates. Meanwhile, Sheldon enlists the help of Bernadette and Amy to overcome his fear of birds.
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S05E10
17 Nov 11
★ 7.2
21m
The Flaming Spittoon Acquisition
When Stuart asks Amy out on a date, Sheldon must confront his feelings and consider where his relationship with Amy is going.
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S05E11
8 Des 11
★ 7.2
20m
The Speckerman Recurrence
Leonard must face his fears after being contacted by his high school tormentor.
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S05E12
12 Jan 12
★ 7.1
21m
The Shiny Trinket Maneuver
Sheldon gets in trouble with Amy when he isn't impressed by her recent accomplishment, and Howard must come to grips with Bernadette's dislike of children.
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S05E13
19 Jan 12
★ 7.6
21m
The Recombination Hypothesis
Leonard, who broke up with Priya, asks Penny out to a spur-of the-moment romantic dinner for two, and the duo contemplates on their relationship.
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S05E14
26 Jan 12
★ 7.6
20m
The Beta Test Initiation
Leonard and Penny deal with the idea of starting a relationship again and Raj finally finds a "woman" he can talk to without being drunk, in the form of Siri on his new phone. Meanwhile, Sheldon decides to start a YouTube series entitled "Sheldon Cooper presents Fun with Flags" with the help of Amy.
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S05E15
2 Feb 12
★ 7.2
20m
The Friendship Contraction
Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Wolowitz tries to pick his astronaut nickname.
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S05E16
9 Feb 12
★ 6.9
21m
The Vacation Solution
When Sheldon is forced to take his vacation, he goes to work with Amy in her neurobiology lab.
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S05E17
16 Feb 12
★ 7.4
21m
The Rothman Disintegration
Sheldon battles Kripke for a coveted office at the university. Penny receives a very unusual gift from Amy.
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S05E18
23 Feb 12
★ 7.8
21m
The Werewolf Transformation
Sheldon becomes agitated when his regular barber is out sick. Astronaut training causes Howard to reconsider wanting to go into space. Penny beats Leonard in chess, the first time she plays.
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S05E19
8 Mar 12
★ 7.2
20m
The Weekend Vortex
Sheldon must choose between joining Amy at her aunt's birthday party or playing videogames all weekend with the guys.
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S05E20
29 Mar 12
★ 7.1
21m
The Transporter Malfunction
Penny buys Leonard and Sheldon “Star Trek” collectibles as a thank-you, leading Sheldon to be haunted by Mr. Spock. Meanwhile, Raj decides he has met the “Future Mrs. Koothrappali” after his parents set him up on a date.
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S05E21
5 Apr 12
★ 7.8
19m
The Hawking Excitation
When Wolowitz gets to work with Stephen Hawking, Sheldon is willing to do anything to meet his hero.
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S05E22
26 Apr 12
★ 7.1
21m
The Stag Convergence
After the guys throw Howard a bachelor party, Bernadette reconsiders marrying him after learning about his sexual history.
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S05E23
3 Mei 12
★ 7.6
21m
The Launch Acceleration
When NASA moves up Howard's mission, he must face his fears and Bernadette's dad, thus putting the wedding plans in jeopardy. Meanwhile, Leonard says something surprising to Penny in the bedroom.
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S05E24
10 Mei 12
★ 7.9
20m
The Countdown Reflection
The fifth season ends with Howard and Bernadette deciding to get married before his NASA mission, causing the gang to scurry into overdrive in an effort to stage the wedding. NASA astronaut Mike Massimino has a cameo as himself.
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S06E01
27 Sep 12
★ 7.2
21m
The Date Night Variable
With his friends on dates, Raj must face his loneliness. Also, Wolowitz is caught in an argument between Bernadette and his mom, even while he’s in space.
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S06E02
4 Okt 12
★ 7.3
21m
The Decoupling Fluctuation
When Sheldon learns that Penny is thinking about breaking up with Leonard, he tries to intervene. Meanwhile, in space, the other astronauts pick on Howard.
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S06E03
11 Okt 12
★ 7.4
19m
The Higgs Boson Observation
Amy feels threatened when Sheldon hires a young female assistant, and the pressure of being in space takes its toll on Wolowitz.
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S06E04
18 Okt 12
★ 7.7
21m
The Re-Entry Minimization
When Wolowitz returns from space, he doesn’t get the hero’s welcome he expected. Meanwhile, Game Night turns into a battle of the sexes.
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S06E05
25 Okt 12
★ 7.5
21m
The Holographic Excitation
The gang celebrates Halloween at Stuart’s comic book store. Meanwhile, Leonard seduces Penny with science.
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S06E06
1 Nov 12
★ 7.2
21m
The Extract Obliteration
Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college.
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S06E07
8 Nov 12
★ 7.3
21m
The Habitation Configuration
Wolowitz struggles with moving out of his mother’s house. Meanwhile, Sheldon is caught in the middle of an argument between Amy and Wil Wheaton.
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S06E08
15 Nov 12
★ 7.8
21m
The 43 Peculiarity
Raj and Howard try to to figure out why Sheldon disappears at 2:45 every afternoon; jealousy arises in Penny and Leonard's relationship.
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S06E09
29 Nov 12
★ 7.8
20m
The Parking Spot Escalation
When the University reassigns Sheldon’s parking spot to Wolowitz, their fight affects the whole gang.
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S06E10
6 Des 12
★ 7.7
21m
The Fish Guts Displacement
When Amy gets sick, Sheldon tries to nurse her back to health; Wolowitz and his father-in-law plan a fishing trip.
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S06E11
13 Des 12
★ 7.5
21m
The Santa Simulation
During a Dungeons and Dragons game, Sheldon revisits Christmas memories; Amy, Penny and Bernadette look for a date for Raj.
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S06E12
3 Jan 13
★ 7.7
21m
The Egg Salad Equivalency
When Sheldon is accused of sexual harassment, he ends up getting Raj, Leonard and Howard in trouble.
-
S06E13
10 Jan 13
★ 8.0
21m
The Bakersfield Expedition
As the guys don costumes and go on a road trip to a comic book convention, the ladies decide to stay home and try to interpret a comic book.
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S06E14
31 Jan 13
★ 7.4
20m
The Cooper/Kripke Inversion
Sheldon faces a crisis of confidence when he is forced to work with his nemesis, Barry Kripke; Raj and Howard buy expensive action figures of themselves.
-
S06E15
7 Feb 13
★ 7.6
21m
The Spoiler Alert Segmentation
A fight between Sheldon and Leonard impacts Amy and Penny's living arrangements; while Howard is away, Raj helps Mrs. Wolowitz out.
-
S06E16
14 Feb 13
★ 7.4
21m
The Tangible Affection Proof
The guys search for a perfect Valentine's Day gift for their significant others; Stuart and Raj host a "lonely people" party at the comic book store.
-
S06E17
21 Feb 13
★ 7.6
19m
The Monster Isolation
After a bad date, Koothrappali decides to never leave his apartment; Penny's acting skills impress Sheldon.
-
S06E18
7 Mar 13
★ 7.6
20m
The Contractual Obligation Implementation
Leonard, Sheldon and Howard give lectures on science to junior high students. The girls ditch work to go to Disneyland. Raj devises a date for Lucy that fixes their social anxiety problems.
-
S06E19
14 Mar 13
★ 7.5
20m
The Closet Reconfiguration
Howard considers whether or not he should open a letter from his father; Penny and Leonard host a "grown-up" cocktail party.
-
S06E20
4 Apr 13
★ 7.7
19m
The Tenure Turbulence
The girls get involved when Leonard, Sheldon and Raj compete for tenure at the University.
-
S06E21
25 Apr 13
★ 7.7
20m
The Closure Alternative
Amy tries to help Sheldon get over his compulsive need for closure when one of his favorite TV shows is canceled; Raj discovers a secret about Lucy.
-
S06E22
2 Mei 13
★ 7.7
21m
The Proton Resurgence
Leonard and Sheldon hire the host (Bob Newhart) of their favorite childhood TV show to perform; Bernadette and Howard run into trouble while dog-sitting for Raj's pet.
-
S06E23
9 Mei 13
★ 7.6
21m
The Love Spell Potential
A date between Raj and Lucy takes both of them out of their comfort zones. After a trip to Las Vegas goes awry, the girls join in on a Dungeons and Dragons game, which causes Amy and Sheldon to re-evaluate their relationship.
-
S06E24
16 Mei 13
★ 7.5
20m
The Bon Voyage Reaction
When Leonard receives an exciting opportunity to work overseas, Penny and Sheldon are thrown for a loop. Raj and Lucy's relationship comes to a crossroad.
-
S07E01
26 Sep 13
★ 7.6
21m
The Hofstadter Insufficiency
With Leonard away, Sheldon and Penny spend quality time together sharing intimate secrets. Also, Wolowitz helps Raj get over his ex-girlfriend.
-
S07E02
26 Sep 13
★ 7.8
21m
The Deception Verification
Leonard and Sheldon's friendship is tested; Howard's latest foray into helping his mother has some disastrous side effects.
-
S07E03
3 Okt 13
★ 8.0
21m
The Scavenger Vortex
When the entire gang competes in a scavenger hunt designed by Raj, it brings out the best - and worst - in everyone.
-
S07E04
10 Okt 13
★ 7.7
21m
The Raiders Minimization
Sheldon gets mad at Amy for ruining one of his favorite movies, Raj and Stuart try to make their online dating profiles more appealing, and Leonard tries to play the sympathy card with Penny.
-
S07E05
17 Okt 13
★ 7.5
19m
The Workplace Proximity
Amy starts working at Caltech which causes friction with Sheldon. Howard agrees with Sheldon who mentions this to Bernadette causing a big fight for the Wolowitzes.
-
S07E06
24 Okt 13
★ 8.0
21m
The Romance Resonance
Sheldon's latest scientific breakthrough leaves him feeling like a fraud; a romantic gesture between Howard and Bernadette causes Penny to up her game with Leonard.
-
S07E07
7 Nov 13
★ 7.6
20m
The Proton Displacement
Sheldon seeks payback when Arthur "Professor Proton" Jeffries asks Leonard for help on a project instead of him. Raj gets upset at Howard for crashing his night with the girls.
-
S07E08
14 Nov 13
★ 7.5
20m
The Itchy Brain Simulation
When a mistake comes to light, Sheldon makes Leonard walk a mile in his shoes; Penny decides to confront Raj's ex-girlfriend, Lucy.
-
S07E09
21 Nov 13
★ 8.1
19m
The Thanksgiving Decoupling
Sheldon protests when the gang drags him to Mrs. Wolowitz’s house for Thanksgiving. Meanwhile, Penny and Leonard must deal with a mistake from her past.
-
S07E10
5 Des 13
★ 7.4
19m
The Discovery Dissipation
Leonard has to deal with the fallout of disproving Sheldon's new scientific discovery. Raj spends a week at Howard and Bernadette's apartment.
-
S07E11
12 Des 13
★ 7.8
21m
The Cooper Extraction
While Sheldon is at home in Texas, the rest of the gang realizes how much he has changed their lives as they decorate the apartment Christmas tree.
-
S07E12
2 Jan 14
★ 7.5
21m
The Hesitation Ramification
When Penny’s big acting break on NCIS is a bust, Leonard struggles to help her, which results in Penny asking Leonard a bold relationship question. Meanwhile, Raj and Stuart try to practice their social skills, and Sheldon navigates the intricacies of being funny.
-
S07E13
9 Jan 14
★ 7.5
20m
The Occupation Recalibration
Sheldon tries to relax after he is forced to take a vacation. Meanwhile, Leonard struggles to be supportive of Penny after she quits her job, and Bernadette seeks Stuart’s help in replacing one of Howard’s comic books. Also, Amy receives an unwanted attention from a co-worker.
-
S07E14
30 Jan 14
★ 7.5
21m
The Convention Conundrum
After the guys can’t get Comic-Con tickets, Sheldon tries to hold his own convention and winds up spending a wild night with James Earl Jones. Meanwhile, the girls try to feel more mature by going to a fancy hotel for tea.
-
S07E15
6 Feb 14
★ 7.4
20m
The Locomotive Manipulation
Sheldon and Amy take a train ride to Napa Valley with Howard and Bernadette on Valentine's Day. Leonard and Penny take Raj's dog to the vet when she accidentally eats some chocolate.
-
S07E16
27 Feb 14
★ 7.5
20m
The Table Polarization
Leonard buys a dining room table and it causes Sheldon to reevaluate the changes in his life. Meanwhile, Wolowitz is offered a chance to go back to space and Bernadette struggles with whether or not to encourage him.
-
S07E17
6 Mar 14
★ 7.2
19m
The Friendship Turbulence
After arguing with Sheldon, Howard tries to make amends by taking him to NASA headquarters in Houston. Penny has second thoughts about quitting her waitressing job when her car dies. Amy gets involved in trying to find Raj a date.
-
S07E18
13 Mar 14
★ 7.2
21m
The Mommy Observation
When Sheldon visits his Mom in Houston, he is forced to confront a new reality. Meanwhile, Raj’s ‘Murder Mystery’ party starts some fights within the gang.
-
S07E19
3 Apr 14
★ 7.5
19m
The Indecision Amalgamation
While Raj is wracked with guilt when he tries to date two women at once, Penny wrestles with whether to take a role in a cheesy movie and Sheldon is torn trying to choose between two gaming systems.
-
S07E20
10 Apr 14
★ 7.7
21m
The Relationship Diremption
Sheldon faces a personal crisis after deciding he’s wasting his time with string theory. Meanwhile, a double date between Raj, Emily and the Wolowitzes ends in embarrassment for Howard.
-
S07E21
24 Apr 14
★ 7.4
19m
The Anything Can Happen Recurrence
To prepare for a date with Emily, Howard acclimates Raj to horror movies. Penny and Sheldon are upset when they discover Amy and Bernadette lied to avoid hanging out with them.
-
S07E22
1 Mei 14
★ 7.4
21m
The Proton Transmogrification
As the gang celebrates Star Wars Day, Sheldon has difficulty dealing with the recent death of Arthur "Professor Proton" Jeffries.
-
S07E23
8 Mei 14
★ 7.3
19m
The Gorilla Dissolution
A bad day causes Penny to reevaluate her life choices – including Leonard. Meanwhile, Howard and Bernadette struggle to care for Mrs. Wolowitz, and Raj gets relationship advice from Sheldon.
-
S07E24
15 Mei 14
★ 7.5
21m
The Status Quo Combustion
Sheldon get upset about his career, the destruction of the comic book store and Leonard and Penny's future living arrangements. Howard and Bernadette can't keep hold of a caretaker for his mother. With his entire world changing around him, Sheldon considers a major move.
-
S08E01
22 Sep 14
★ 7.0
21m
The Locomotion Interruption
Leonard and Amy make an unexpected trip to Arizona to fetch Sheldon; Penny interviews for a job at Bernadette's company; Stuart's relationship with Mrs. Wolowitz disturbs Howard.
-
S08E02
22 Sep 14
★ 7.3
20m
The Junior Professor Solution
Sheldon is forced to teach a class as a Junior Professor and Howard decides to enroll in it. Meanwhile, Amy plays both sides when tension arises between Penny and Bernadette.
-
S08E03
29 Sep 14
★ 7.0
19m
The First Pitch Insufficiency
Wolowitz feels nervous when he is asked to throw the first pitch at a Los Angeles Angels game. Penny and Leonard want to prove Sheldon wrong after he says he and Amy are the better couple.
-
S08E04
6 Okt 14
★ 7.0
19m
The Hook-Up Reverberation
Raj's honesty comes back to haunt him when his new girlfriend is unfriendly to Penny. The guys think about becoming part owners in Stuart's store.
-
S08E05
13 Okt 14
★ 7.2
19m
The Focus Attenuation
The girls head to Las Vegas for some weekend fun, while the guys try to invent something cool, but only come up with new ways to procrastinate.
-
S08E06
20 Okt 14
★ 7.2
21m
The Expedition Approximation
Sheldon and Raj test whether they could survive a dark-matter research expedition in a salt mine by simulating the conditions in a steam tunnel deep underground. Meanwhile, Leonard and Penny seek advice from Howard and Bernadette after they fight about money.
-
S08E07
30 Okt 14
★ 7.7
20m
The Misinterpretation Agitation
The guys try to help Penny out of an awkward work dilemma, when a smitten doctor shows up at her door after her flirtatious sales techniques work a little too well. Meanwhile, Amy and Bernadette argue over whether or not female scientists should play up their sexuality.
-
S08E08
6 Nov 14
★ 7.5
20m
The Prom Equivalency
The girls decide to re-enact their high school proms with the guys. While Sheldon feels under pressure to commit to his relationship with Amy, Howard worries about who Stuart will bring as his date.
-
S08E09
13 Nov 14
★ 7.5
20m
The Septum Deviation
When Leonard gets minor surgery on his nose, Sheldon is the one in need of sympathy. Meanwhile, Raj's parents' impending divorce causes Howard and Bernadette to work on their own marriage.
-
S08E10
20 Nov 14
★ 7.1
19m
The Champagne Reflection
While Sheldon says a tearful goodbye to the final installment of "Fun with Flags", Leonard, Howard and Raj search for something significant in a dead professor's research. And Bernadette finds out what her colleagues really think of her.
-
S08E11
11 Des 14
★ 7.3
19m
The Clean Room Infiltration
Leonard and Howard turn to Raj for help in dealing with a work emergency when they nearly come to blows after blaming each other for a potential disaster at the university. Amy throws an authentic Victorian Christmas party, while Sheldon seeks revenge on her for making him celebrate the holidays.
-
S08E12
8 Jan 15
★ 7.2
20m
The Space Probe Disintegration
Howard tries to distract Raj, who is anxiously awaiting data from a space probe he helped launch. Meanwhile, Sheldon and Leonard go dress shopping with Penny and Amy.
-
S08E13
29 Jan 15
★ 7.4
20m
The Anxiety Optimization
When Sheldon becomes stuck in a rut with his work, the gang tries to help him by raising his stress levels. Howard teases Raj with a game called "Emily or Cinnamon?"
-
S08E14
5 Feb 15
★ 7.4
21m
The Troll Manifestation
Leonard and Sheldon publish a paper which is widely accepted except for comments from an internet troll. Meanwhile, the girls reminisce about embarrassing incidents from their past.
-
S08E15
19 Feb 15
★ 7.6
20m
The Comic Book Store Regeneration
Howard receives some shocking news as everyone prepares for the reopening of Stuart’s comic book store. Penny teaches Sheldon how to “let it go,” but can’t follow her own advice after she learns something infuriating about Amy. Also, Leonard and Raj think they spot Nathan Fillion at a restaurant.
-
S08E16
26 Feb 15
★ 7.6
20m
The Intimacy Acceleration
As a joke, Sheldon and Penny try an experiment designed to make participants fall in love. Meanwhile, Leonard, Amy, Raj and Emily spend the evening trying to escape a room with a “zombie.” And, after returning from Mrs. Wolowitz’ funeral, Bernadette and Howard run into trouble at the airport.
-
S08E17
5 Mar 15
★ 7.2
20m
The Colonization Application
A trip to the pet store ends in a fight after Amy learns Sheldon has applied for a one-way mission to colonize Mars. Meanwhile, Leonard surprises Penny with a very "adult" purchase, and Raj gets into trouble when he snoops around Emily's apartment.
-
S08E18
12 Mar 15
★ 7.0
19m
The Leftover Thermalization
Friction ensues when a magazine fails to mention Leonard in an article about the paper he co-wrote with Sheldon. Also, a blackout at Mrs. Wolowitz’s home leads to a final family dinner in her honor.
-
S08E19
2 Apr 15
★ 7.5
21m
The Skywalker Incursion
When Leonard and Sheldon are invited to speak at UC Berkeley, they take a detour to try to meet an idol. Also, when Bernadette and Howard battle over the fate of his Doctor Who TARDIS, Raj and Amy offer to settle the dispute with a game of ping pong.
-
S08E20
9 Apr 15
★ 7.5
20m
The Fortification Implementation
When Sheldon and Amy build a blanket fort, they come to major crossroads in their relationship. Also, Howard meets the half-brother he never knew he had. Meanwhile, Penny is invited to appear on Wil Wheaton’s podcast, but things turn awkward when Leonard joins them.
-
S08E21
16 Apr 15
★ 7.0
19m
The Communication Deterioration
When Raj is asked to create a message in case a NASA mission discovers alien life, the guys fight over what he should do. Also, Penny is torn between auditioning for a movie or keeping her successful pharmaceutical sales job.
-
S08E22
23 Apr 15
★ 7.2
19m
The Graduation Transmission
Howard questions his engineering abilities when he and Sheldon can’t get a toy drone to fly. Meanwhile, a cancelled flight nearly prevents Leonard from giving the commencement address at his former high school, and Raj pits his parents against each other when his father cuts him off financially.
-
S08E23
30 Apr 15
★ 7.5
19m
The Maternal Combustion
Personalities collide when Sheldon and Leonard’s mothers finally meet. Meanwhile, Howard finally decides to “man up” and do his fair share of the housework – but not without a little help from his friends.
-
S08E24
7 Mei 15
★ 7.6
20m
The Commitment Determination
As Sheldon presses Leonard and Penny to set a wedding date, he encounters major changes in his own relationship with Amy. Meanwhile, Raj contemplates breaking up with Emily, and Howard and Bernadette struggle with asking Stuart to move out of their house.
-
S09E01
21 Sep 15
★ 7.3
19m
The Matrimonial Momentum
After driving to Vegas to get married, Penny struggles with Leonard’s confession that he kissed another girl. Also, Sheldon doesn't know how to act after Amy pushes pause on their relationship.
-
S09E02
28 Sep 15
★ 7.3
19m
The Separation Oscillation
Leonard confronts the woman he kissed on the North Sea in an attempt to set Penny's mind at ease. Also, Sheldon films a special episode of "Fun with Flags" after his breakup with Amy, and Bernadette feels guilty about withholding a secret from Penny.
-
S09E03
5 Okt 15
★ 7.5
19m
The Bachelor Party Corrosion
The guys' science skills are put to the test when they get a flat tire during Leonard's bachelor party weekend in Mexico. Also, the girls force Penny to finally tell her family that she eloped with Leonard.
-
S09E04
12 Okt 15
★ 7.6
19m
The 2003 Approximation
Sheldon learns of an impending change in his living arrangements and decides to revert back to 2003, a simpler time before he met Leonard and Penny. Also, Howard and Raj form a band to play at the Comic Book Store.
-
S09E05
19 Okt 15
★ 7.1
19m
The Perspiration Implementation
The guys take a fencing lesson from Barry Kripke and Sheldon finds himself in an awkward position when Kripke expresses interest in Amy. Also, when Stuart struggles to get female customers at the Comic Book Store, Penny, Amy and Bernadette come by to help him out.
-
S09E06
26 Okt 15
★ 7.2
19m
The Helium Insufficiency
In the midst of a nation-wide helium shortage, Sheldon and Leonard take desperate measures to get the supplies they need. Also, Penny and Bernadette download a dating app on Amy's phone to try and find her a new man.
-
S09E07
5 Nov 15
★ 7.7
19m
The Spock Resonance
Wil Wheaton interviews Sheldon for a Star Trek documentary where he reveals the ring and his plan to propose to Amy. Bernadette wants to start renovating the house and the topic of starting a family together with Howard is brought up.
-
S09E08
12 Nov 15
★ 7.6
18m
The Mystery Date Observation
Sheldon, Wolowitz and Koothrappali post an online advertisement to find Sheldon a new girlfriend. Also, when Amy is coy with details about a guy she is dating, Penny and Bernadette decide to spy on her.
-
S09E09
19 Nov 15
★ 7.6
21m
The Platonic Permutation
Sheldon and Amy try hanging out as friends when they spend Thanksgiving together at the aquarium. Also, Wolowitz reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily, and Penny discovers that Leonard knows more about her than she thought.
-
S09E10
10 Des 15
★ 7.9
21m
The Earworm Reverberation
Sheldon has a revelation when he realizes why a song was stuck in his head. Also, Amy invites Dave over for dinner despite their previously awkward date, and Wolowitz and Koothrappali become obsessed with a fan of their band, "Footprints on the Moon".
-
S09E11
17 Des 15
★ 8.4
21m
The Opening Night Excitation
After more than five years of dating, Sheldon and Amy spend their first night together. Also, Leonard, Wolowitz, and Koothrappali must decide who will take their extra Star Wars movie ticket.
-
S09E12
7 Jan 16
★ 7.4
18m
The Sales Call Sublimation
Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist on her behalf. Also, Sheldon and Koothrappali collaborate on an astronomical discovery, and Wolowitz and Bernadette can't believe what they are feeling after Stuart moves out.
-
S09E13
14 Jan 16
★ 7.3
19m
The Empathy Optimization
After having to deal with a sick Sheldon, Leonard, Penny and the gang try to treat themselves to a Sheldon-free weekend.
-
S09E14
4 Feb 16
★ 7.3
19m
The Meemaw Materialization
Meemaw meets Amy, but it isn't all roses. Meemaw seems to have an axe to grind with her. Sheldon comes to Amy's defense, but not before Meemaw lets a little secret of his slip.
-
S09E15
11 Feb 16
★ 7.3
20m
The Valentino Submergence
Sheldon and Amy host a live Valentine's Day episode of Fun with Flags, Leonard and Penny grapple with getting older, Howard and Bernadette find a surprise in their hot tub and Raj is torn between Emily and the cute girl he met at the Comic Bookstore.
-
S09E16
18 Feb 16
★ 7.4
19m
The Positive Negative Reaction
When the gang finds out about Bernadette’s pregnancy, they celebrate by singing karaoke. Also, Bernadette is concerned when Wolowitz freaks out over her pregnancy announcement, and Wolowitz is convinced he must make more money to provide for the baby.
-
S09E17
25 Feb 16
★ 7.1
19m
The Celebration Experimentation
After more than nine years together, the gang finally celebrates Sheldon’s birthday, surprising him with a special guest.
-
S09E18
10 Mar 16
★ 7.3
18m
The Application Deterioration
Leonard, Sheldon, and Wolowitz run into problems when they file for a patent for their infinite persistence gyroscope. Also, Penny, Amy and Bernadette give Koothrappali dating advice when Emily reaches out to him after their breakup.
-
S09E19
31 Mar 16
★ 7.3
21m
The Solder Excursion Diversion
Amy is shocked at a revelation from Sheldon after she buys him a new laptop. Also, Koothrappali sells out Leonard and Wolowitz after they lie to their wives in order to attend an early screening of a movie.
-
S09E20
7 Apr 16
★ 7.4
19m
The Big Bear Precipitation
Sheldon spills a secret of Leonard’s when the two take a weekend cabin trip with Penny and Amy. Also, when Koothrappali goes overboard with pregnancy gifts, Wolowitz and Bernadette must draw the line.
-
S09E21
21 Apr 16
★ 7.1
18m
The Viewing Party Combustion
Everyone must choose sides when a small argument between Leonard and Sheldon erupts into a heated fight during a group get-together.
-
S09E22
28 Apr 16
★ 7.3
20m
The Fermentation Bifurcation
The gang goes to a wine bar and runs into Penny’s old boyfriend, Zack. Also, Bernadette gets stuck spending the evening with Sheldon when she can’t go wine tasting with the group, and things don’t go as planned when Koothrappali introduces his new girlfriend, Claire.
-
S09E23
5 Mei 16
★ 7.3
18m
The Line Substitution Solution
Sheldon hires Stuart to spend the day with Amy when he’d rather go to a movie screening. Also, Leonard’s mother, Beverly, comes to town and Penny struggles to make a connection with her.
-
S09E24
12 Mei 16
★ 7.6
20m
The Convergence Convergence
Chaos ensues when Leonard’s recently divorced parents, Alfred and Beverly, and Sheldon’s devoutly religious mother, Mary, come to town. Also, Wolowitz and Koothrappali think the government is out to get them when they are contacted about their guidance system.
-
S10E01
19 Sep 16
★ 6.9
22m
The Conjugal Conjecture
After Sheldon’s mother and Leonard's father share an evening together, everyone deals with an awkward morning the next day. Also, Penny’s family arrives for the wedding ceremony, including her anxiety-ridden mother, Susan, and her drug dealing brother, Randall.
-
S10E02
26 Sep 16
★ 6.8
19m
The Military Miniaturization
Colonel Williams, an Air Force representative from the Department of Material Command sits down to talk with Wolowitz.
-
S10E03
3 Okt 16
★ 6.9
20m
The Dependence Transcendence
Tensions rise when the boys struggle to complete their government project on time and Sheldon tries an energy drink to stay awake. Also, Penny and Amy go to a “party” at Bert the geologist’s house, and Koothrappali learns Bernadette’s true feelings about her pregnancy when they clean out the future baby room.
-
S10E04
10 Okt 16
★ 7.6
20m
The Cohabitation Experimentation
When Amy’s apartment floods, she proposes a “cohabitation experiment” with Sheldon. Also, Howard and Bernadette are upset when Koothrappali learns the gender of the baby before they do.
-
S10E05
17 Okt 16
★ 7.3
20m
The Hot Tub Contamination
Leonard and Penny must separate a quarreling Sheldon and Amy when their cohabitation does not go as planned, and Sheldon threatens to break off their relationship when Amy refuses to adhere to the bathroom schedule. Also, Howard and Bernadette find unexpected guests at their house when they decide to stay home from a planned vacation.
-
S10E06
27 Okt 16
★ 7.1
18m
The Fetal Kick Catalyst
Penny is surprised to learn she has fans of her performance in "Serial Ape-ist" when she attends Van Nuys Comic Con with Leonard. Also, Amy hosts a Sheldon-style brunch at Penny’s apartment, and Wolowitz makes an impulsive purchase when he starts stressing out about the baby on the way.
-
S10E07
3 Nov 16
★ 7.1
21m
The Veracity Elasticity
In order to continue living with Sheldon, Amy lies to him about repairs being made to her apartment and they host an "on location" episode of "Fun With Flags" in Penny’s apartment. Also, Leonard lets Penny decorate Sheldon’s old room after he learns that she has been secretly moving Leonard’s collectibles into storage.
-
S10E08
10 Nov 16
★ 7.3
19m
The Brain Bowl Incubation
After a successful experiment combining their genes, Sheldon will stop at nothing to convince Amy they should procreate. Also, Koothrappali is embarrassed to tell the gang what the new woman he’s dating does for a living.
-
S10E09
17 Nov 16
★ 7.2
19m
The Geology Elevation
When Bert, a Caltech geologist, wins the MacArthur Genius fellowship, Sheldon is overcome with jealousy. Also, Wolowitz finds an old remote control Stephen Hawking action figure he invented.
-
S10E10
1 Des 16
★ 7.2
20m
The Property Division Collision
Sheldon and Leonard try to divvy up their shared belongings, but can’t agree on anything. Also, Koothrappali and Stuart fight to be the most helpful during Bernadette’s final weeks of pregnancy.
-
S10E11
15 Des 16
★ 7.0
20m
The Birthday Synchronicity
Howard and Bernadette welcome their new baby and Sheldon and Amy celebrate Amy’s birthday.
-
S10E12
5 Jan 17
★ 7.0
21m
The Holiday Summation
Sheldon and Amy visit Leonard and Penny for the first time since the holidays and share details about their terrible trip to Texas.
-
S10E13
19 Jan 17
★ 6.8
19m
The Romance Recalibration
When Penny feels that Leonard is taking her for granted, she decides to go on a spa weekend with Amy. Also, Wolowitz and Koothrappali try to fix a squeaky floorboard in the baby’s room.
-
S10E14
2 Feb 17
★ 6.8
19m
The Emotion Detection Automation
Sheldon beta-tests an MIT invention after hearing it can help him read people’s emotions. Also, Leonard can’t hide his feelings when Penny announces her brother is coming to town, and Raj invites his ex-girlfriends over to give him dating advice.
-
S10E15
9 Feb 17
★ 7.0
20m
The Locomotion Reverberation
Leonard and Wolowitz try to distract Sheldon when he slows the progress of their guidance system. Also, Penny and Amy take Bernadette out for the night, leaving Raj and Stuart to care for baby Halley.
-
S10E16
16 Feb 17
★ 6.7
18m
The Allowance Evaporation
Sheldon and Amy have their first fight since moving in together, and Koothrappali is shocked at the realities of financial independence when he stops receiving support from his father.
-
S10E17
23 Feb 17
★ 7.0
19m
The Comic-Con Conundrum
With Koothrappali cut off from his father’s fortune, he appoints Sheldon to help him get out of debt. Also, Penny considers joining Leonard at Comic-Con.
-
S10E18
9 Mar 17
★ 6.9
20m
The Escape Hatch Identification
When Raj moves out of his apartment, Leonard and Penny offer him Sheldon's old room.
-
S10E19
30 Mar 17
★ 7.1
18m
The Collaboration Fluctuation
Leonard, Penny and Raj adjust to their new living arrangement, and Sheldon takes an interest in Amy’s work.
-
S10E20
6 Apr 17
★ 6.9
19m
The Recollection Dissipation
Sheldon pushes himself to the limit when he collaborates on projects with Leonard and Wolowitz as well as Amy on the same day. Also, Bernadette is nearing the end of her maternity leave and must return to work.
-
S10E21
13 Apr 17
★ 6.9
20m
The Separation Agitation
Howard and Bernadette have a hard time leaving Halley in day care when Bernadette returns to work. Also, Bert introduces the gang to his new girlfriend, Rebecca.
-
S10E22
27 Apr 17
★ 6.7
20m
The Cognition Regeneration
Leonard isn’t thrilled when Penny considers taking a new job offered by her ex-boyfriend, Zack.
-
S10E23
4 Mei 17
★ 7.0
19m
The Gyroscopic Collapse
After Leonard, Sheldon and Wolowitz celebrate the completion of the top secret air force project, they are met with an unpleasant surprise. Also, Amy is offered a summer position as a visiting researcher.
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S10E24
11 Mei 17
★ 7.7
19m
The Long Distance Dissonance
The gang is concerned when Sheldon’s former admirer, Dr. Ramona Nowitzki, resurfaces while Amy is away at Princeton.
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S11E01
25 Sep 17
★ 7.5
21m
The Proposal Proposal
In the eleventh season opener, Amy gives Sheldon an answer to his proposal while Howard and Bernadette struggle with some unexpected news.
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S11E02
2 Okt 17
★ 7.0
21m
The Retraction Reaction
Leonard angers the university – and the entire physics community – after he gives an embarrassing interview. Also, Amy and Bernadette bond over having to hide their success from Sheldon and Howard.
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S11E03
9 Okt 17
★ 6.9
20m
The Relaxation Integration
Sheldon and Amy struggle with picking a wedding date, which stresses out Sheldon and causes him talking in his sleep. Meanwhile, Raj and Stuart fight over the attention of one of Bernadette's co-workers.
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S11E04
16 Okt 17
★ 7.0
21m
The Explosion Implosion
As Howard worries about fatherhood, he and Sheldon bond when they jointly assemble a model rocket. Meanwhile, Penny bonds with Leonard's mother, Beverly, much to his concern.
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S11E05
23 Okt 17
★ 7.1
19m
The Collaboration Contamination
Sheldon and Raj confide in Bernadette when they can't handle Amy and Howard working together on a science project. Also, Penny and Leonard learn new tactics for how to deal with Sheldon from an unlikely source.
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S11E06
2 Nov 17
★ 7.1
21m
The Proton Regeneration
Sheldon goes head-to-head with Wil Wheaton for the role of the new Professor Proton. Also, Penny steps in to take care of Halley when Bernadette and Howard both wind up on bed rest.
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S11E07
9 Nov 17
★ 7.2
20m
The Geology Methodology
Sheldon and Bert collaborate on a research project, despite Sheldon’s embarrassment. Also, Penny and Bernadette coach Raj on how to navigate his relationship with Ruchi.
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S11E08
16 Nov 17
★ 7.1
19m
The Tesla Recoil
Leonard and Howard are furious after they learn Sheldon went to work with the military behind their backs. Also, while Bernadette is on bed rest, she asks Raj to do some digging when she suspects that Ruchi might be trying to take over her projects at work.
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S11E09
30 Nov 17
★ 7.3
19m
The Bitcoin Entanglement
Sheldon tries to teach the guys a lesson after they cut him out of a potentially valuable Bitcoin investment. Also, a seven-year-old video reveals a secret about Leonard and Penny's relationship.
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S11E10
7 Des 17
★ 7.0
21m
The Confidence Erosion
Sheldon and Amy try to eliminate stress from wedding planning by applying math to the process. Also, Raj “breaks up” with Howard after realizing his best friend is actually hurting his confidence.
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S11E11
14 Des 17
★ 6.9
20m
The Celebration Reverberation
Raj and Howard's feud continues as the gang plan Halley's first birthday party. Sheldon's surprise for Amy's birthday goes awry when they get food poisoning. Also, Leonard gets a Christmas letter from his brother that causes him to spiral out about his own lack of accomplishments.
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S11E12
4 Jan 18
★ 7.0
20m
The Matrimonial Metric
Sheldon and Amy try to pick their Best-Man and Maid of Honor by experimenting on the gang.
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S11E13
11 Jan 18
★ 7.0
21m
The Solo Oscillation
When Sheldon kicks Amy out to work solo, she and Leonard bond during a series of science experiments. Also, Bert the geologist replaces Wolowitz in the band Footprints on the Moon, and Sheldon finds Penny a surprising source of scientific inspiration.
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S11E14
18 Jan 18
★ 6.8
19m
The Separation Triangulation
Raj finds himself in the middle of domestic drama when he learns the woman he's dating, has a very upset husband. Also, when Sheldon rents his old room back for a quiet place to work, he drives Leonard crazy by being a model tenant.
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S11E15
1 Feb 18
★ 7.2
21m
The Novelization Correlation
Leonard's book raises questions, and Amy guest stars on the new Professor Proton show.
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S11E16
1 Mar 18
★ 6.9
19m
The Neonatal Nomenclature
When Bernadette won't go into labor, the gang tries different tactics to get things started. Also, Howard confronts Bernadette after Amy accidentally reveals she's already chosen their son's name.
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S11E17
8 Mar 18
★ 6.7
20m
The Athenaeum Allocation
Leonard jumps through hoops to help secure the perfect wedding venue for Sheldon and Amy. Also, Bernadette and Howard have a hard time deciding who should stay at home with the kids and who should go back to work.
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S11E18
29 Mar 18
★ 6.9
20m
The Gates Excitation
Bill Gates visits Penny's work, and the gang schemes to meet him. Hilarity ensues. Meanwhile, Sheldon is convinced that he's a target of an April's Fools prank.
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S11E19
5 Apr 18
★ 7.1
21m
The Tenant Disassociation
When Leonard learns Sheldon is the president of the tenants association, he decides to run against him. Also, Bernadette encourages Howard and Raj to find the owner of a drone after they find it in the backyard.
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S11E20
12 Apr 18
★ 7.1
21m
The Reclusive Potential
A brilliant but reclusive scientist, Doctor Wolcott, invites Sheldon to his cabin in the middle of nowhere, and Leonard, Raj and Howard go along for the trip. Also, Penny and Bernadette improvise after Amy doesn’t like the tame bachelorette party they planned for her.
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S11E21
19 Apr 18
★ 7.2
20m
The Comet Polarization
Sheldon’s comic book store experience changes when writer Neil Gaiman puts Stuart’s store on the map. Also, friendships are threatened when Raj takes credit for Penny's astronomical discovery.
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S11E22
26 Apr 18
★ 7.0
19m
The Monetary Insufficiency
Sheldon goes to Vegas to win money for science. Also, Penny and Bernadette take Amy wedding dress shopping, but her terrible choice entangles them in a web of lies.
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S11E23
3 Mei 18
★ 7.4
20m
The Sibling Realignment
When Sheldon learns that his mother won’t attend his wedding unless he invites his brother, Georgie, he and Leonard travel to Texas to end a family feud. Also, the Wolowitz kids inadvertently infest Amy, Bernadette, Howard and Raj with pinkeye.
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S11E24
10 Mei 18
★ 7.9
22m
The Bow Tie Asymmetry
When Amy's parents and Sheldon's family arrive, everybody is focused to make sure all wedding arrangements go according to plan – everyone except the bride and groom.
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S12E01
24 Sep 18
★ 9.9
20m
The Conjugal Configuration
Sheldon and Amy's honeymoon runs aground in New York. Penny and Leonard discover they are uncomfortably similar to Amy's parents. Raj insults physicist Neil deGrasse Tyson and starts a Twitter war.
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S12E02
27 Sep 18
★ 7.4
21m
The Wedding Gift Wormhole
Sheldon and Amy drive themselves crazy trying to figure out what 'perfect gift' Leonard and Penny gave them for their wedding. Raj decides he wants to settle down and asks his father to arrange a marriage for him.
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S12E03
4 Okt 18
★ 7.0
20m
The Procreation Calculation
The Wolowitzes' life gets complicated when Stuart starts bringing his new girlfriend home. Also, Penny and Leonard talk about starting a family, while Raj explores an arranged marriage.
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S12E04
11 Okt 18
★ 6.9
19m
The Tam Turbulence
When Sheldon won't tell anyone why he's never mentioned his childhood best friend, Leonard takes matters into his own hands. Bernadette and Penny take out Raj’s fiancée for dinner to get the skinny on her.
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S12E05
18 Okt 18
★ 6.7
19m
The Planetarium Collision
When Amy doesn’t have time to work on super-asymmetry, Sheldon goes to great lengths to ensure she’s available to work with him even it if means accidentally sabotaging her career in the process. Raj doesn’t want Howard to join him in hosting a show at the planetarium.
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S12E06
25 Okt 18
★ 7.5
20m
The Imitation Perturbation
When Howard dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party. Leonard is shocked that Penny doesn't remember their first kiss.
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S12E07
1 Nov 18
★ 7.0
20m
The Grant Allocation Derivation
Leonard is caught between a rock and a hard place when he's responsible for distributing extra grant money. Bernadette turns the backyard playhouse into a hideaway from Howard and the kids.
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S12E08
8 Nov 18
★ 7.0
22m
The Consummation Deviation
Sheldon tries to bond with Amy's father, but when Howard lures Mr. Fowler away with magic tricks, Sheldon has no choice but to bond with Mrs. Fowler. Raj and Anu try to get physical for the first time.
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S12E09
15 Nov 18
★ 7.0
21m
The Citation Negation
Sheldon and Amy are devastated after learning from a Russian paper that Super Asymmetry has already been theorized and disproven. Meanwhile, ultra-competitive Bernadette asks Stuart’s girlfriend to teach her how to beat Howard in a popular video game.
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S12E10
6 Des 18
★ 7.0
21m
The VCR Illumination
Sheldon and Amy are still down about their theory being disproven, but a VHS tape from Sheldon’s past inspires him not to give up. Bernadette turns into a pageant mom when she tries to help Howard ace his Magic Castle audition.
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S12E11
3 Jan 19
★ 7.0
20m
The Paintball Scattering
Penny and Leonard organize a paintball game that results in mayhem when Sheldon is jealous of Amy. Also, Raj catches Anu with her ex-boyfriend, and Stuart gets cold feet when Denise hints at the possibility of them living together.
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S12E12
10 Jan 19
★ 6.7
20m
The Propagation Proposition
Penny runs into her ex-boyfriend, Zack, who invites her and Leonard to a dinner to meet his newlywed wife. After the dinner the newlywed couple make an odd proposition to Leonard, which makes Penny to freak out. Also, Raj attempts to mend things with his ex-fiancée, Anu.
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S12E13
17 Jan 19
★ 6.7
21m
The Confirmation Polarization
Sheldon and Amy are thrilled when their super asymmetry theory is proven by two physicists, until they try to kick Amy off the Nobel nomination. Also, Bernadette gets one of her drugs approved at work and wants a reluctant Penny to head the sales team.
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S12E14
31 Jan 19
★ 6.7
20m
The Meteorite Manifestation
Sheldon is thrilled to help Bernadette and Wolowitz navigate bureaucratic paperwork, until he discovers they are breaking the law. Also, Leonard is disappointed when his friends exclude him from a scientific project.
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S12E15
7 Feb 19
★ 6.8
22m
The Donation Oscillation
Penny tries to seduce an abstaining Leonard to ruin his "donation" for her ex-boyfriend, Zack, and his wife, Marissa. Also, Wolowitz, Bernadette, Anu and Koothrappali turn Koothrappali's canceled bachelor party into a couple's trip.
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S12E16
21 Feb 19
★ 7.3
21m
The D & D Vortex
The gang finds out Wil Wheaton hosts a celebrity Dungeons and Dragons game involving William Shatner, Joe Manganiello, Kareem Abdul-Jabbar and Kevin Smith. Deception and betrayal are the path to make it to the one open seat.
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S12E17
7 Mar 19
★ 6.6
20m
The Conference Valuation
When Penny and Bernadette go to San Diego for a pharmaceutical sales convention, Wolowitz is in charge of the kids. Also, Sheldon finds a book on experimenting on kids, and the guys plus Amy make a day of it.
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S12E18
4 Apr 19
★ 6.9
22m
The Laureate Accumulation
When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to bring Nobel laureates Kip Thorne, George Smoot and Frances Arnold to their side. Also, Halley's fear of the dark causes opportunity and conflict at the Wolowitz home.
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S12E19
18 Apr 19
★ 6.5
21m
The Inspiration Deprivation
The concept of what it would mean for women everywhere if Amy were to win a Nobel Prize causes Amy to have a meltdown. Also, Howard and Raj try to relive the good old days after Howard buys a scooter that looks like the one he had years ago.
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S12E20
25 Apr 19
★ 6.6
20m
The Decision Reverberation
Raj is worried people won’t take him seriously in his own field after publishing a paper that suggests he may have discovered alien life. Also, Leonard wants to be the principal investigator on a plasma physics study.
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S12E21
2 Mei 19
★ 6.9
20m
The Plagiarism Schism
Kripke has proof that Dr. Pemberton plagiarized his thesis in college, and Sheldon and Amy aren't sure if they should turn him in or not. Meanwhile, Howard learns that Bernadette wasn't the only waitress at the Cheesecake Factory who had a crush on him.
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S12E22
9 Mei 19
★ 7.3
21m
The Maternal Conclusion
Leonard is pleasantly surprised when Beverly comes to visit and she's genuinely kind to him, until he finds out the real reason she's there. Also, Denise and Stuart overstay their welcome at the Wolowitz house.
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S12E23
16 Mei 19
★ 8.0
42m
The Change Constant / The Stockholm Syndrome
Sheldon and Amy await big news. Meanwhile, Penny and Leonard have some big news of their own. Also, Howard and Bernadette face the stressful challenge of leaving their kids for the first time and Raj makes a new friend, as the gang travels together into an uncharted future.
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S12E24
16 Mei 19
★ 8.2
23m
Unraveling the Mystery: A Big Bang Farewell
Johnny Galecki and Kaley Cuoco will lead fans on a trip down memory lane, sharing some of the best-kept backstage secrets and personal memories from the past 12 years.