The Big Bang Theory

The Imitation Perturbation

E6    Oct 25, 2018    20m    TV-PG
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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.
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Cast of The Imitation Perturbation
  • Johnny GaleckiLeonard Hofstadter
  • Jim ParsonsSheldon Cooper
  • Kaley CuocoPenny
  • Simon HelbergHoward Wolowitz
  • Kunal NayyarRajesh Koothrappali
  • Melissa RauchBernadette Rostenkowski
  • Mayim BialikAmy Farrah Fowler
  • Kevin SussmanStuart Bloom
  • Pamela AdlonHalley Wolowitz (voice)
  • David TheuneDr. Graybel
  • Rati GuptaAnu
  • Brian PosehnBert Kibbler

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