I spent my first couplefew weeks back grinding heirlooms and trying every class I never spent much time on before. I did do some healing on a shaman, and it was fun but I've just kind of got healing fatigue. Not feeling it. Don't feel like doing battlegrounds or PVP really either. I've just been DPSing in the dungeon finder and having a grand old time! :) So basically, the exact opposite of how I was playing before. I'll probably even do a little raiding. I think it's inevitable that after several years of the same game, if you don't move on from it entirely you'll eventually find a way to play it differently.
I just in the last couple of days settled on the hunter though as my new "main." Not that I'll ever invest the kind of time in her as I did in my priest (or invest that kind of time in WoW again, really), but I had to choose someone to level up so I can do stuff with my guild, and she met my criteria the best. She's level 52 though so I'm a ways off.