17 Celebrities Who Are Smarter Than You May Think

13. Ken Jeong

He may be one crazy and outrageous character in movies, but before he got his first big role he was a practicing obstetrician. He would work during the day and then go do stand-up gigs at night. His first acting role came when he was cast as the OBGYN in Knocked Up. He went on to be Mr. Chow in The Hangover.