The Big Bang Theory premiered nearly two decades ago — and the TV universe has only grown with three spinoffs (and counting)! The sitcom inspired a franchise when The Big Bang Theory aired from 2007 to 2019. It starred Jim Parsons, Kaley Cuoco, Johnny Galecki, Simon Helberg, Kunal Nayyar, Mayim Bialik and Melissa Rauch as a group of friends made up of physicists and their significant others. The Big Bang Theory won 10 Emmy Awards during its 12-season run and spawned the prequel series, Young Sheldon. In addition to serving as an executive producer on the latter show, Parsons acted as the narra...

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