Details
- Season
- Season 4
- Episode
- S04xE10
- Air Date
- 09 December 2010
- Where to watch
Overview
The Big Bang Theory season 4, episode 10 — “The Alien Parasite Hypothesis” (S04xE10) first aired on 09 December 2010.
Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.