The Big Bang Theory may turn out to be one of the last blockbuster sitcoms of its kind, and it left behind one of the most unlikely pop culture icons as well — Sheldon Cooper. The antisocial genius played by Jim Parsons captured fans’ hearts over the course of 12 seasons and nearly 300 episodes

"George and Mandy's First Marriage" just debunked a major Sheldon Cooper hypothesis that "Big Bang Theory" fans have long believed.

Before Georgie and Mandy's First Marriage, there was The Big Bang Theory and Young Sheldon — but which stars have crossed over from one spinoff to another? The Big Bang Theory, which aired from 2007 to 2019,