![The Staircase Implementation](https://cdn.statically.io/img/tv.apple.com/assets/artwork/1x1.gif)
The Big Bang Theory
The Staircase Implementation
S3 E22:
Leonard tells Penny the story of how he met Sheldon for the first time...and what happened to the elevator.
Starring
Ally Maki, Steven Yeun, Ajgie Kirkland