I've been healing heroics with my shaman for the past couple days; had two horrible runs that ended in fail, but the majority of runs have been successful. It's pretty damn fun, and I love situations where I seem to go into auto-pilot, where if I fuck up most likely a wipe will occur. I don't feel that when I dps; in fact I just follow whatever rotation is required for the most success. I definitely feel it when I tank though.

Guild drama update (on my warrior): I'm getting so tired of arrogant WoW players. I'll never understand the stupidity behind people complaining about "welfare" gear and how it's so easy to gear up. The funny thing is that most of the people who make these arguments didn't spend any time doing hard modes in Ulduar or TogC. Obviously the ICC hard modes aren't out yet, but when they do come out I fully expect to witness these same fucktards standing in fire and ultimately not showing up to raids. This arrogance is really annoying me.
To make matters worse, our guild leader lets this environment fester. He'll join in on lambasting a guildie, or making fun of someone for screwing up. If someone sucks they need to be talked to, but embarrassing them in front of everyone is stupid. It's an unhealthy environment. Honestly I'd leave the guild if I could find a legitimate alternative. But the best raid guilds on our server are too bloated for me to make much of an impact.