The CBS sitcom followed a group of best friends and roommates and also starred Kaley Cuoco as Penny, Jim Parsons as Sheldon Cooper, Johnny Galecki as Leonard Hofstadter, Simon Helberg as Howard ...

His EMI algorithm, an early form of artificial intelligence that he developed in the 1980s, prompted searching questions ...

In the 17th episode of the debut season of "The Big Bang Theory," something huge happens: Leonard Hofstadter (Johnny Galecki) ...

An early interaction between Penny (Kaley Cuoco) and Sheldon (Jim Parsons) on The Big Bang Theory proved to be the key to ...