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Leonard, Sheldon, Wolowitz and Koothrappali attend Penny's Halloween party.
Leonard, Sheldon, Wolowitz and Koothrappali attend Penny's Halloween party.
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The Big Bang Theory
S3, EP4 "The Pirate Solution"Raj faces deportation if he does not find a job; Leonard and Penny deal with Howard as a third wheel.
The Big Bang Theory
S5, EP20 "The Transporter Malfunction"When Penny buys Leonard and Sheldon "Star Trek" collectibles, Sheldon finds himself haunted by Mr. Spock; after a blind date, Raj believes he has met his future wife.
The Big Bang Theory
S5, EP21 "The Hawking Excitation"When Stephen Hawking comes to lecture at the university for a week, Wolowitz is given the task of maintaining his wheelchair, making Sheldon green with envy.
The Big Bang Theory
S5, EP22 "The Stag Convergence"Knowledge of Howard's sexual history makes Bernadette reconsider their future together.
The Big Bang Theory
S12, EP6 "The Imitation Perturbation"When Wolowitz dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party; Leonard is shocked when Penny doesn't remember their first kiss.
