The Big Bang Theory S04E10 - The Alien Parasite Hypothesis

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Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.

Genres: Comedy

Keywords: friends , geek , nerd , scientist , sitcom , watch-series-online

Cast

  • Johnny Galecki
  • Jim Parsons
  • Kaley Cuoco
  • Simon Helberg
  • Kunal Nayyar
  • Melissa Rauch
  • Mayim Bialik
  • Brian Thomas Smith