The Big Bang Theory
The Cognition Regeneration
Season 10, Episode 22 · Aired 2017-04-27

Synopsis
Leonard isn't thrilled when Penny considers taking a new job offered by her ex-boyfriend, Zack.
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