Wolowitz and Bernadette celebrate Halloween by dressing up as Smurfs on The Big Bang Theory. "Holographic Excitation" is the fifth episode of the show's sixth season.
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The Big Bang Theory Season 6 Episode 5 Quotes

You know, people say the Soyuz capsule was a lemon. But, hey, that baby got me to space and back.

Howard

Ain't no party like a Koothra-party.

Raj