I just healed Blackrock Mountains and it was one of the best runs I could've had.
Tank was great and mitigated a lot of damage and ALWAYS had aggro on everything.
DPS was always at 9-12k.
It was very easy to heal.
Everything went smoothly and we 1 shot everything except Corla which the chicken (boomkin) lagged which resulted in stacks getting too high.
As we were pulling one of the flames near Karsh, it pulled him too and we killed the flame. At this point I was at 20% mana and the tank pulled Karsh to the middle where the boss fight should occur and we end up killing him when we should have wiped.
For Beauty we PEW PEW'D the hell out of the pups and the boss, killing everything, which I haven't done before.
For Lord Obsidius we just kited the boss and didn't pay attention to adds and killed him in 1 shot.
All in all, we cleared it in an hour or so, only 1 wipe and it was accidental. By far the best dungeon run I have had on Cataclysm so far, especially with the whole Karsh pull.