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Sheldon tries to help Penny understand Leonard's work; Wolowitz gets jealous when Leonard starts hanging out with his new girlfriend.
Sheldon tries to help Penny understand Leonard's work; Wolowitz gets jealous when Leonard starts hanging out with his new girlfriend.
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S4, EP19 "The Zarnecki Incursion"The guys try to figure out who hacked Sheldon's online-game account.
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S5, EP17 "The Rothman Disintegration"Sheldon and his nemesis, Kripke, compete for a corner office; Penny feels uncomfortable after receiving a gift from Amy.
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S2, EP5 "The Euclid Alternative"Leonard and his friends stage an intervention to force Sheldon to face his fear of driving.
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S4, EP20 "The Herb Garden Germination"Amy and Sheldon spread gossip as part of an experiment; Howard decides to take a big step in his relationship with Bernadette.
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S12, EP12 "The Propagation Proposition"Penny's ex-boyfriend Zack learns that he is infertile, so he asks Leonard for help; Koothrappali attempts to mend things with his ex-fiancee Anu.
The Big Bang Theory
S12, EP11 "The Paintball Scattering"Penny and Leonard organize a paintball game, which results in mayhem when Sheldon becomes jealous of Amy; Koothrappali catches Anu with her ex-boyfriend; Stuart doesn't want to move in with Denise.
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S12, EP10 "The VCR Illumination"A VHS tape from Sheldon's past inspires him not to give up; Bernadette turns into a pageant mom when she tries to help Wolowitz with his Magic Castle audition.
The Big Bang Theory
S12, EP9 "The Citation Negation"Sheldon and Amy are devastated after learning from a Russian paper that Super Asymmetry has already been discovered and disproved; Bernadette wants to beat Howard in a popular video game.
