S12E06 The Imitation Perturbation
The Big Bang Theory

calendar_today 2007. Chuck Lorre. Bill Prady.

stars 8.3 Comedy. Romance.

people Johnny Galecki. Jim Parsons. Kaley Cuoco. Simon Helberg.

When Wolowitz dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny’s Halloween party. Also, Leonard is shocked that Penny doesn’t remember their first kiss.