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Leonard keeps an affair a secret from Sheldon, Howard and Raj.

Leonard keeps an affair a secret from Sheldon, Howard and Raj.

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The Big Bang Theory

S8, EP24 "The Commitment Determination"

While facing dramatic changes in his relationship with Amy, Sheldon pushes Penny and Leonard to choose a wedding date.

The Big Bang Theory

S5, EP9 "The Ornithophobia Diffusion"

Leonard and Penny spend time alone; Sheldon tries to face his fear of birds.

The Big Bang Theory

S5, EP10 "The Flaming Spittoon Acquisition"

Sheldon is jealous when Stuart (Kevin Sussman), a guy from the comic book store, asks Amy out on a date.

The Big Bang Theory

S5, EP11 "The Speckerman Recurrence"

Leonard must face the bully who targeted him in high school; Penny confronts her past actions.

The Big Bang Theory

S8, EP23 "The Maternal Combustion"

When Sheldon's and Leonard's mothers finally meet, personalities collide; Howard decides to do his share of the chores -- with a little help from his friends.

The Big Bang Theory

S8, EP22 "The Graduation Transmission"

Wolowitz questions his engineering skills after he and Sheldon can't get a toy drone to fly; a canceled flight puts Leonard's plans in jeopardy; Raj sets his parents against one another after he's cut off financially.

The Big Bang Theory

S8, EP21 "The Communication Deterioration"

The guys fight over what message Raj should write for NASA in case of alien contact; Penny has to decide between auditioning for a movie or keeping her pharmaceutical sales job.

The Big Bang Theory

S8, EP20 "The Fortification Implementation"

Sheldon and Amy build a blanket fort -- and come to a crossroads in their relationship; Wolowitz meets a half-brother he didn't know he had; Leonard and Penny have an argument during an appearance on Wil Wheaton's podcast.

Mensa-fied best friends and roommates Leonard and Sheldon, physicists who work at the California Institute of Technology, may be able to tell everybody more than they want to know about quantum physics, but getting through most basic social situations, especially ones involving women, totally baffles them. How lucky, then, that babe-alicious waitress/aspiring actress Penny moves in next door. Frequently seen hanging out with Leonard and Sheldon are friends and fellow Caltech scientists Wolowitz and Koothrappali. Will worlds collide? Does Einstein theorize in the woods?
Starring: Aarti Mann, Christine Baranski, Jim Parsons, John Ross Bowie, Johnny Galecki, Kaley Cuoco, Kaley Cuoco-Sweeting, Kate Micucci, Kevin Sussman, Kunal Nayyar, Laura Spencer, Mayim Bialik, Melissa Rauch, Simon Helberg, Wil Wheaton
Original Air Date: Sep 24, 2007
Genres: ComedyTV Series
Rating: TVPG
Playback: HD
3 seasons available on demand
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