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The Big Bang Theory
Loading…The Big Bang TheorySeason 4 · Episode 10 — The Alien Parasite Hypothesis
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Season 4 · Episode 10S4 · E10The Alien Parasite Hypothesis

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Episodes

24 in Season 4

  1. 1The Robotic Manipulation21 min · 2010
  2. 2The Cruciferous Vegetable Amplification21 min · 2010
  3. 3The Zazzy Substitution21 min · 2010
  4. 4The Hot Troll Deviation20 min · 2010
  5. 5The Desperation Emanation21 min · 2010
  6. 6The Irish Pub Formulation22 min · 2010
  7. 7The Apology Insufficiency21 min · 2010
  8. 8The 21-Second Excitation19 min · 2010
  9. 9The Boyfriend Complexity21 min · 2010
  10. 10The Alien Parasite HypothesisNow playing
  11. 11The Justice League Recombination20 min · 2010
  12. 12The Bus Pants Utilization21 min · 2011
  13. 13The Love Car Displacement21 min · 2011
  14. 14The Thespian Catalyst21 min · 2011
  15. 15The Benefactor Factor20 min · 2011
  16. 16The Cohabitation Formulation20 min · 2011
  17. 17The Toast Derivation21 min · 2011
  18. 18The Prestidigitation Approximation21 min · 2011
  19. 19The Zarnecki Incursion21 min · 2011
  20. 20The Herb Garden Germination21 min · 2011
  21. 21The Agreement Dissection21 min · 2011
  22. 22The Wildebeest Implementation21 min · 2011
  23. 23The Engagement Reaction20 min · 2011
  24. 24The Roommate Transmogrification21 min · 2011
S4 · E10The Big Bang Theory

The Alien Parasite Hypothesis

7.9Comedy200720 min

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

Up nextThe Justice League RecombinationS4 · E11 · 20 min

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