The actors appear in an ad for the video game Royal Kingdom together, six years after the finale of their CBS sitcom “The Big Bang Theory.” The series followed best friends, roommates and physicists ...

One actor played different characters on Georgie & Mandy’s First Marriage, Young Sheldon, and The Big Bang Theory.

But Young Sheldon has found a second life on Netflix, which added the sitcom's last installment to its library on April 15.