Well once people have all the heroics stealthed, it's obvious the next step is some of the 10 man raids. Although i haven't attempted this yet, it's amazing what youtube has on it, on it, it features some video's of a 10 druid karazan!
So yes it's possible, here are some links.
Hmm this says its a 10 druid China WoW server, but it looks more like a music clip!
From the EU Server Shattered Hand
One day i'll learn how to stick video's in my blog (i'm sure it's not hard, i'm just a bit lazy as you can see from the number of posts lately)