Watch S4, EP10: The Alien Parasite Hypothesis with Fubo for $0 Today
Amy realizes she has feelings for Penny's ex; Koothrappali and Wolowitz try to prove who would be a better superhero.
Amy realizes she has feelings for Penny's ex; Koothrappali and Wolowitz try to prove who would be a better superhero.
More episodes
The Big Bang Theory
S4, EP13 "The Love Car Displacement"Bernadette runs into her ex-boyfriend (Rick Fox) while attending a science event with Wolowitz.
The Big Bang Theory
S4, EP14 "The Thespian Catalyst"Sheldon takes acting lessons from Penny in hope of becoming a better teacher; Koothrappali fantasizes about his friend's girlfriend.
The Big Bang Theory
S4, EP15 "The Benefactor Factor"A wealthy donor makes Leonard question what he is willing to do for science.
The Big Bang Theory
S4, EP16 "The Cohabitation Formulation"Wolowitz considers taking things with Bernadette to the next level; Leonard and Raj's sister rekindle their relationship.
The Big Bang Theory
S12, EP24 "The Stockholm Syndrome"Bernadette and Wolowitz leave their kids for the first time; Penny and Leonard try to keep a secret; Sheldon and Amy stick together; Koothrappali makes a new friend; the gang travels together into an uncharted future.
The Big Bang Theory
S12, EP22 "The Maternal Conclusion"Leonard is pleasantly surprised when Beverly comes to visit, and she's genuinely kind to him, until he finds out the real reason she's there; Denise and Stuart overstay their welcome at the Wolowitz house.
The Big Bang Theory
S12, EP21 "The Plagiarism Schism"Kripke has proof that Dr. Pemberton plagiarized his thesis in college, and Sheldon and Amy aren't sure if they should turn him in or not; Wolowitz learns that Bernadette wasn't the only waitress at the Cheesecake Factory who had a crush on him.
