From playing Sheldon's father in law to portraying a personified pimple, famed Magician Teller does it all in 'The Big Bang Theory' universe.

Other memorable appearances include Mark Hamill, Stephen Hawking, Stan Lee, and William Shatner. Here, we’ve listed 10 other great celebrity appearances in The Big Bang Theory that you may well ...

"The Big Bang Theory" set the franchise's tone for ... Everyone from Sheldon's hero, Leonard Nimoy, to Mark Hamill to Stan Lee made an appearance on the sitcom. Following suit, "Young Sheldon ...