The Big Bang Theory
The Infestation Hypothesis
Season 5, Episode 2 · Aired 2011-09-22
Synopsis
Fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya.
In the series
This episode is part of The Big Bang Theory (2007–2019) on CBS.
Nerd culture goes multi-cam prime-time global.
Key cast
- Johnny Galecki as Leonard Hofstadter
- Jim Parsons as Sheldon Cooper
- Kaley Cuoco as Penny
- Simon Helberg as Howard Wolowitz
- Kunal Nayyar as Raj Koothrappali
- Mayim Bialik as Amy Farrah Fowler