Imagine, if you can bear the thought, the idea of a child being delivered by Ken Jeong's character from 'The Hangover'. Pretty terrible idea, right? And yet it could actually happen in real life. Jeong's qualifications have nothing to do with acting; he left the University of North Carolina in 1995 with a medical degree, and he's a licensed obstetrician.
He stuck with his trade for a while, too. He actually had a residency at a New Orleans surgery for a while after graduating, but when he wasn't working he was perfecting his standup comedy routines in the city's nightclubs. He was even still working in medicine when he landed his first movie role in 'Knocked Up', but the success of that film finally persuaded him to put the stethoscope down and transition into acting and comedy full time.