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The Big Bang Theory S04E10


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The Big Bang Theory : The Alien Parasite Hypothesis

S04, E10 ()

Amy realizes she has feelings for Penny's ex; Koothrappali and Wolowitz try to prove who would be a better superhero.

Cast:
  • Johnny Galecki,
  • Jim Parsons,
  • Kaley Cuoco,
  • Simon Helberg,
  • Kunal Nayyar

Guests:
  • Melissa Rauch ,
  • Mayim Bialik ,
  • Brian Thomas Smith

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