The Big Bang Theory Season 1 Episode 2

Penny is furious and more than a little freaked out with Leonard and Sheldon when they sneak into her apartment overnight, and clean it while she is sleeping.
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Watch The Big Bran Hypothesis
Air Date: 1 October 2007
Director: Mark Cendrowski
Language: English,Russian,Italian
Runtime: 21 Minutes
More Info: IMDb

Cast: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar