Some of the quests and achievements have been a lot of fun. Some have been downright bollock-burningly annoying. I've traveled over every inch of the map, delved into myriad dungeons, eaten bizarre foods, juggled near invisible batons, been riotously pissed, pledged my love and honour literally dozens of elders. Of all the things I have done is WoW, this act of sheer tenacity is the only one that I would even consider an 'achievement' - if you ever can have one in a computer game.
Of course, now I am going to have to find something else to do but Catacylsm will be out sometime this year and that may well start a longer, stranger trip.