#0 - Oct. 31, 2007, 5:16 p.m.
Since I've started playing I've had a GeForce 6800 burn out a transistor (with smoke, in the middle of a molten core raid) and later replaced the same card about 9 months later after the fan seized.
So for me, WoW has claimed the lives of 2 video cards. I've played since Nov '04 and have about 180 /played. I know of at least 3 of my friends who have also had to replace video cards (2 from fans seizing) and 1 that had his motherboard just quit (heat related we think).
Summary - 5 video cards, may they rest in pieces.
EDIT:
This post was meant to be more humour than blaming the game. Hardware can and will fail, i was just looking for funny stories about when it failed why you were playing =(