Aired today,
5:10pm - 5:35pmon E4
The Big Bang Theory
Series 4 Episode 10: The Alien Parasite HypothesisAmy finds she has sexual feelings for Penny's ex-boyfriend Zack while Koothrappali and Wolowitz try to prove who would be the better superhero.
- Category
- Sitcom
- Original air date
- 09/12/2010
Cast and crew
