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Poster for The Big Bang Theory

The Big Bang Theory(2007)

Comedy

7.9(12460)12 seasons279 episodes2007-09-24

Where to watch The Big Bang Theory. Stream The Big Bang Theory free in HD on Redflix—no sign-up required.

Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.

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Cast

Photo of Johnny Galecki

Johnny Galecki

Leonard Hofstadter

Photo of Jim Parsons

Jim Parsons

Sheldon Cooper

Photo of Kaley Cuoco

Kaley Cuoco

Penny

Photo of Simon Helberg

Simon Helberg

Howard Wolowitz

Photo of Kunal Nayyar

Kunal Nayyar

Rajesh Koothrappali

Photo of Melissa Rauch

Melissa Rauch

Bernadette Rostenkowski

Photo of Mayim Bialik

Mayim Bialik

Amy Farrah Fowler

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