Revord stole the show as Sheldon's plucky twin sister Missy Cooper on Young Sheldon, the spin-off to The Big Bang Theory, and ...

The Big Bang Theory reunion fans have been waiting for is here. Simon Helberg is guest starring in the Season 3 finale of ...

Young Sheldon, the prequel series of The Big Bang Theory, focused on Sheldon as a child and followed him through his growing-up years.