For my prot warrior at least. Got the idea from a popular tanking website, I'm just missing 1 trinket that would make this even easier with a ton less health loss. Once I get that one I'll be able to tank even more mobs! *edit* I made this video late last night, yes it's my warrior. YouTube - Warrior AoE Grinding
Man what's with all these WoW videos with terrible music? Anyway, yep.. Scryer Hold, outside Black Temple in Shadowmoon Valley. I've been making 2,000g a day there for a year and a half now.. just not as a prot warrior.
lol, that's Neo Geisha by Zeromancer. I love their music, and I chose that song because it just happened to be playing on my playlist at the time.