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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.
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.
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The Big Bang Theory
S6, EP2 "The Decoupling Fluctuation"Sheldon tries to intervene when he learns that Penny is thinking about breaking up with Leonard; Howard is picked on in space by the other astronauts.
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S6, EP3 "The Higgs Boson Observation"Amy feels threatened by Sheldon's new assistant; Wolowitz starts to feel the pressures of being in space.
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S6, EP5 "The Holographic Excitation"The gang heads to Stuart's comic book store to celebrate Halloween; Leonard uses science to seduce Penny.
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S2, EP14 "The Financial Permeability"Sheldon's solution to Penny's financial difficulty leads to a confrontation between Leonard and Penny's ex-boyfriend.
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.
