I'm having tons of fun with 3 feral druids. Any of them can tank, and you can get a dungeon group in about 10 seconds most of the time. Plus if your main druid dies you can just shift the next one into bear form and pick up tanking.

The triple stealth is also pretty awesome for PvP and it's funny spamming interact with target and having all 3 cats going berserk running circles around people.