"I was actually really against the show when I first heard about it," Wheaton admitted. "I thought it was going to be making fun of ... getting Wil Wheaton to join "The Big Bang Theory" in ...

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.