I don't watch too many "reality" shows but I checked out (on and off) King Of The Nerds, which just finished its first season. The idea couldn't be simpler--get a bunch of self-professed nerds together and through elimination rounds, based on nerdy interests, pick the king who'll be head of Nerdvana and sit on the Throne Of Games. Being at least an honorary nerd, it seemed up my alley.
Also, many of the contests seemed ill-conceived, none more so than the finale, where the knocked-out nerds came back and voted for the winner. Why should it end in such subjectivity--especially coming from losers who likely have a chip on their shoulder about their mightiest opponent? I won't spoil it for you, but I was so disgusted by the results that I was sorry I watched at all.