The Big Bang Theory - Season 4 (2010)

Play Season 4 Trailer

Trailer

The Big Bang Theory

- Season 4

(2010)

Season 4

2010

22m

Comedy

Episode 10 - The Alien Parasite Hypothesis

Air Date: Dec 9, 2010

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

IN MY NETWORK

Ratings from people you follow will season up here when you sign up.

WATCH HISTORY

When you watch this season, just log it and it will be added here. sign up to start logging!.