Matt Iseman was a jock when I first knew him as a college classmate of mine at Princeton. After graduation, Matt went to med school to become a doctor, only to diagnosis himself as a comedian. Since then, he has shared an Emmy win for the cable show, Clean House, hosted Sports Soup and Scream Play on E!, and appeared in TV ads and Transformers 2. But you know him best now as the host of NBC's American Ninja Warrior, and he's a contestant on Arnold Schwarzenegger's season of Celebrity Apprentice on NBC. What's it like to rub shoulders with Ahnold and a bunch of people who were famous when Matt was a kid? I asked him, so let's get to it!

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