I have to admit, I was tempted to buy WoW again for cataclysm, I played WoW when it first came out and got to max level then quit, not played it since. Theres no decent MMO's around at the mo, not been a good one out since WoW imo and i've played them all since the first Everquest.
I'm thinking about getting it for that s**t week between christmas and new year where noone does a thing. I want to see just how much this "cataclysm" has changed the world, if its made all the old zones different i'll get it again because it'll be like playing a new game.
The cataclysm thing is s**t though, they stole that story from everquest 2.