The Big Bang Theory

The Alien Parasite Hypothesis

Directed by Mark Cendrowski
TV-PG
S4 • E10    Dec 8, 2010    20m
7.6
Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.

Where to Watch The Alien Parasite Hypothesis

Cast of The Alien Parasite Hypothesis

  • Johnny GaleckiLeonard Hofstadter
  • Jim ParsonsSheldon Cooper
  • Kaley CuocoPenny
  • Simon HelbergHoward Wolowitz
  • Kunal NayyarRajesh Koothrappali
  • Melissa RauchBernadette Rostenkowski
  • Mayim BialikAmy Farrah Fowler
  • Brian Thomas SmithZack Johnson
  • Mark CendrowskiDirector
  • Chuck LorreWriter
  • Steven MolaroWriter
  • Jim ReynoldsWriter
  • Steve HollandWriter / Producer
  • Maria FerrariWriter
  • Faye Oshima BelyeuProducer

 

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