“The Staircase Implementation” — Leonard (Johnny Galecki, far right) tells Penny about how he and the guys (Kunal Nayyar, second from left; Simon Helberg, second from right) met Sheldon (Jim Parsons, far left) for the first time…and what happened to the elevator, on THE BIG BANG THEORY, Monday, May 17 (9:31-10:01 PM, ET/PT) on the CBS Television Network.
Photo: Robert Voets/CBS
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