"The Big Bang Theory" The Alien Parasite Hypothesis (TV Episode 2010) Poster

Photo Gallery

8 photos
The Big Bang Theory (2007)Still of Jim Parsons in The Big Bang Theory (2007)Still of Mayim Bialik, Kaley Cuoco-Sweeting, Brian Smith and Melissa Rauch in The Big Bang Theory (2007)Still of Simon Helberg and Kunal Nayyar in The Big Bang Theory (2007)Still of Mayim Bialik and Jim Parsons in The Big Bang Theory (2007)Still of Mayim Bialik, Kaley Cuoco-Sweeting and Melissa Rauch in The Big Bang Theory (2007)Still of Mayim Bialik and Brian Smith in The Big Bang Theory (2007)Still of Mayim Bialik and Jim Parsons in The Big Bang Theory (2007)
8 photos

Storyline

Amy finds she has sexual feelings for Penny's ex-boyfriend Zack, while Raj and Howard try to prove who would be the better superhero.

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