Big Bang Theory [HD]

The Alien Parasite Hypothesis [HD]

  • Season 4
  • , Episode 10  | 
  • Aired: 12/9/2010
    • Length: 21:00
    • Plays: ???
Synopsis >

Amy finds she has sexual feelings for Penny's ex, Zack (guest star BRIAN THOMAS SMITH) while Koothrappali and Wolowitz try to prove who would be the better superhero.

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