The Big Bang Theory

The Big Bang Theory is an American sitcom that stars Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Sara Gilbert, Melissa Rauch and Mayim Bialik. The show surround with 5 characters: 2 roommate geniuses who work at the California Institute of Technology, experimental physicist Leonard Hofstadter and theoretical physicist Sheldon Cooper; their neighbor across the hall Penny, a blonde waitress and aspiring actress; and Leonard and Sheldon’s equally geeky and socially awkward co-workers and friends Howard Wolowitz, an aerospace engineer and a non-PhD from JPL, and Rajesh Koothrappali, an astrophysicist also working at Caltech. The sitcom is centered on five characters living in Pasadena, California: roommates Leonard Hofstadter and Sheldon Cooper; Penny, a waitress and aspiring actress who lives across the hall; and Leonard and Sheldon's equally geeky and socially awkward friends and co-workers, mechanical engineer Howard Wolowitz and astrophysicist Raj Koothrappali. The geekiness and intellect of the four guys is contrasted for comic effect with Penny's social skills and common sense.. Watch TV shows online free. Watch The Big Bang Theory series online.