Battling a cold this week (a parting gift from The Boy before his business trip to San Francisco), so I've been going through lots of tissues, leveling up my shaman, and generally feeling vaguely miserable and sorry for myself. I'm not a very stoic person about being sick, but WoW at least makes for a decent distraction.
I don't know how I'll spec him at 70, but my shaman is currently enhancement for leveling and has been a lot of fun to play so far. Just yesterday I completed Call of Air, the level 30 quest to get an air totem (and with it, arguments over whether groups should get Windfury or Grace of Air). As a bonus, the quest giver also gives you a cool buff that lets you fly down from the top of the Exodar to the bottom (plus an hour of increased attack speed).
I'm really enjoying the new buffs to leveling; it feels like we have a lot more choices to make about where we go and what we do in Azeroth, without actually sacrificing XP efficiency.