Best known for his role as Mr. Chow in "The Hangover" and the star of his own sitcom "Dr. Ken," Jeong studied pre-med at Duke University, got his MD at UNC Chapel Hill, then completed his residency in New Orleans.

According to the Washington Post, "he treated patients at an HMO clinic [during the day]; at night, he scooped up as many stand-up gigs as he could." His big break came when Judd Apatow cast him as the OB in "Knocked Up."