The Big Bang Theory

The Staircase Implementation

E22    May 17, 2010    20m    TV-PG
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Leonard tells Penny about how he met Sheldon for the first time...and what happened to the elevator.
Where to Watch The Staircase Implementation
Cast of The Staircase Implementation
  • Johnny GaleckiLeonard Hofstadter
  • Jim ParsonsSheldon Cooper
  • Kaley CuocoPenny
  • Simon HelbergHoward Wolowitz
  • Kunal NayyarRajesh Koothrappali
  • Carol Ann SusiDebbie Wolowitz (voice)
  • Ed LiebermanAnnouncer (voice)
  • Ally MakiJoyce Kim
  • Steven YeunSebastian
  • Ajgie KirklandLouie

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