The Imitation Perturbation Season 12, Episode 6 -  Aired October 25, 2018

The Imitation Perturbation

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.

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Guest Stars: Kevin Sussman as Stuart, Brian Posehn as Bert, Rati Gupta as Anu, Pamela Adlon as Halley, David Theune as Dr. Graybel

Writers: Steve Holland (Story), Maria Ferrari (Story), Tara Hernandez (Story), Eric Kaplan (Teleplay), Jeremy Howe (Teleplay), Adam Faberman (Teleplay)

Director: Mark Cendrowski

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Episode Notes

  • The title refers to Howard dressing up as Sheldon for Halloween, prompting a retaliatory response from Sheldon.