The Big Bang Theory

The Imitation Perturbation

Series 12 - Episode 6 The Imitation Perturbation

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Summary

Sheldon seeks revenge on Howard when his colleague dresses up as him for Halloween. Leonard is shocked that Penny does not remember their first kiss.

Cast & Crew

Leonard Hofstadter Johnny Galecki
Sheldon Cooper Jim Parsons
Penny Hofstadter Kaley Cuoco
Howard Wolowitz Simon Helberg
Raj Koothrappali Kunal Nayyar
Amy Farrah Fowler Mayim Bialik
Bernadette Rostenkowski Melissa Rauch
Stuart Bloom Kevin Sussman
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Sitcom