The Big Bang Theory - Season 4 Episode 10 The Alien Parasite Hypothesis
Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.
- Genre: Comedy
- Studio: CBS
- Keyword: geek, nerd, friends, scientist, sitcom
- Cast: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Melissa Rauch
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