The Big Bang Theory
The Staircase Implementation
Season 3, Episode 22 · Aired 2010-05-17
Synopsis
Leonard tells Penny about how he met Sheldon for the first time...and what happened to the elevator.
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