The Big Bang Theory | The Staircase Implementation
Genre: Comedy
Director: Bill Prady, Chuck Lorre
Cast: Jim Parsons, Johnny Galecki, Kaley Cuoco, Kunal Nayyar, Mayim Bialik, Melissa Rauch, Simon Helberg
Description: : Leonard tells Penny about how he met Sheldon for the first time...and what happened to the elevator.