The Imitation Perturbation

Overview

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.

Guest Stars

Kevin Sussman

Stuart Bloom

Pamela Adlon

Halley Wolowitz (voice)

David Theune

Dr. Graybel

Rati Gupta

Anu

Brian Posehn

Bert Kibbler