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The Big Bang Theory

  • 2011
  • Season 4
  • 24 episodes
  • Sitcom

Summary

Sheldon, Leonard's roommate, is quite content spending his nights playing Klingon Boggle with their socially dysfunctional friends, fellow Caltech scientists Wolowitz and Koothrappali. However, Leonard sees in Penny a whole new universe of possibilities... including love.

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Episode 10: The Alien Parasite Hypothesis

Summary

Amy finds she has romantic feelings for Penny's former boyfriend Zack, while Raj and Howard begin competing to prove which of them would make the better superhero. Comedy, guest starring Brian Thomas Smith.

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Credits

Cast

rolename
Leonard HofstadterJohnny Galecki
Sheldon CooperJim Parsons
PennyKaley Cuoco
Howard WolowitzSimon Helberg
Raj KoothrappaliKunal Nayyar
Amy Farrah FowlerMayim Bialik
ZackBrian Thomas Smith

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