I've been too busy PVPing to run any instance that isn't Molten Core and Onyxia. I hit exalted with the Silverwing Sentinals just last night. Now for those Arathor bastards and then I'll be killing people in style.
I did spend four hours in a scholo 5-man once. But that was before they nerfed the caps so I have an excuse to have spent that long in there.
Just to add in for the hell of it, I'm basically a part of the next generation of pushers for GM, I'm pumped for it.