So I caved, and just bought Cataclysm. So far it's been a pretty awesome experience. Landscapes are new. Things are fresh again. The quests are interesting and keeps you updated with the lore surrounding the area you're in. Dungeon finder works well, and the phasing makes it more dynamic. water-effects are nice to look at. I'll give it 8/10 for an expansion. Current patch is 4.2, but 4.3 promises a whole new tirade of stuff. Keep it up Blizzard!