#14: Ken Jeong
Ken Jeong is a part of that special brand of actors who forge a great deal of their success by making themselves appear unintelligent. He has typecast himself into roles that rely on their stupidity to create comedic value. This is why it’s so surprising to discover that Jeong used to be a doctor.

I wonder how his former patients feel seeing him make a fool of himself on the big and small screens. Of course, it’s always possible that he practiced some of his acting skills while on the job in the hospital. Maybe he was sharing wisecracks and mimicking his patients all along.