Watch The Big Bang Theory S05E02
The Infestation Hypothesis
A fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya.. You can watch The Big Bang Theory S05E02 here.
Air date: September 22, 2011 on CBS at 8:00 PM
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Season 5 Episode 1
Air date: September 22, 2011 on CBS
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Watch The Big Bang Theory S05E03 - The Pulled Groin Extrapolation
Season 5 Episode 3
Air date: September 29, 2011 on CBS