Don't discount C.J just yet, he did win Brainteaser and The Weakest Link, which has never been done before.
Seriously though, he was a Mensa chess champion, which does deserve some respect.
I do love Kevins Credentials though: winner of British Quiz Championship, European Quiz Championship, World Quizzing Championships, Fifteen to One, Mastermind, Brain of Britain and Mind Sports Olympiad.
What did the chap do before? I think he was a night security guard somewhere which was boring as fuck so he brought encyclopedia's to read for shits and giggles.