The Big Bang Theory
The Classified Materials Turbulence
Season 2, Episode 22 · Aired 2009-05-04

Synopsis
Things begin to look up for Leonard when Penny makes a surprising revelation on her second date with Stuart. Meanwhile, Wolowitz enlists his friends' help when he discovers a critical design flaw in his project for NASA.
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