From my hotel room.
I'm in the middle of a move. Heading overseas with the Government. I have not stopped raiding yet though. Last night, Blackwing Lair, we took down Razorgore, Vael, the Broodlord, and Firemaw. What a night.
Funny thing is this isn't really any more difficult than Zul'Gurub is. It's just a matter of strategy and experience and gear.
And, yes, at least 40 committed raiders helps. Guild matters.