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The Big Bang Theory

S3-E22 The Staircase Implementation

S3-E22 The Staircase Implementation



The comedy flashes back to reveal how Sheldon saved the lives of his pals, and looks at the origins of his friendship with Leonard seven years previously, as well as explaining the housemates' agreement. Johnny Galecki and Jim Parsons star.

Cast & Crew

Leonard Hofstadter Johnny Galecki
Sheldon Cooper Jim Parsons
Penny Kaley Cuoco
Howard Wolowitz Simon Helberg
Raj Koothrappali Kunal Nayyar
Director Mark Cendrowski
Writer Chuck Lorre
Writer Bill Prady
Writer David Goetsch
Writer Maria Ferrari
Writer Lee Aronsohn
Writer Steven Molaro
Writer Steve Holland
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