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The Big Bang Theory — Season 3 Episode 20

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S03E20

The Spaghetti Catalyst

★ 7.8 3 Mei 10 20 menit

When Leonard and Penny aren't speaking, Sheldon goes to extremes to keep them both happy.

Comedy

Episode

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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
S03E16 1 Mar 10 ★ 7.9 21m The Excelsior Acquisition Sheldon winds up in traffic court when he gets a ticket because of Penny.
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.
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.
S03E20 3 Mei 10 ★ 7.8 20m Sedang diputar The Spaghetti Catalyst When Leonard and Penny aren't speaking, Sheldon goes to extremes to keep them both happy.
S03E21 10 Mei 10 ★ 7.4 21m The Plimpton Stimulation Leonard and Sheldon compete for the attention of a famous female physicist.
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.
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.