When you consider the fact that Johnny Galecki starred as experimental physicist Leonard Hofstadter for 12 seasons and the same number of years on "The Big ... 3 episode "The Wheaton Recurrence ...

"The Big Bang Theory" brought us an unforgettable mix of science, friendship, and laughter that we're still talking about 18 ...

In this episode, the origins of all the relationships are revealed, making it unnecessary to start with The Big Bang Theory‘s ... including Wil Wheaton, who became friends with Sheldon and ...

Then, at 18, Wheaton suddenly left Hollywood. He explains why he left and came back and how he came to play his evil self on The Big Bang Theory. Produced by Will Wei. Camera by Devan Joseph.