The Big Bang Theory | The Imitation Perturbation
Genre: Comedy
Director: Bill Prady, Chuck Lorre
Cast: Jim Parsons, Johnny Galecki, Kaley Cuoco, Kunal Nayyar, Mayim Bialik, Melissa Rauch, Simon Helberg
Description: : When Howard dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party. Leonard is shocked that Penny doesn't remember their first kiss.