Not being from the US (and not getting Jeopardy in my country), i've never heard of this guy. He's incredibly entertaining in this interview, definitely caught me off guard considering how serious and straight-faced he seemed throughout the Watson matches (Thanks, YouTube).
This interview is the funniest thing i've read today (3 hour work commute, I read LOTS.)
Oh, and did anyone else keep wanting to upvote his answers?