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The Big Bang Theory (OAD: )


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    Avg. 4.7 (8,867 ratings)
 
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The Big Bang Theory : The Alien Parasite Hypothesis

()

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

Watch  The Alien Parasite Hypothesis on TV

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Previous Episode

The Boyfriend Complexity

(First Aired: November 18, 2010)

Penny asks Leonard to lie to her father (Keith Carradine); Howard, Raj and Bernadette pull an all-nighter at a telescope.

Next Episode

The Justice League Recombination

(First Aired: December 16, 2010)

The guys try to bond with Penny's new boyfriend through a costume contest.