I participated in my first Onyxia kill ever. It was actually a really cool encounter. I especially like how the lava would splash up through the cracks in the ground (seen here steaming) damaging you a lot.
Overall though, it seemed to be pretty easy fight, though I'm sure that's because my guild has done it so many times.
I've never made a non-image post in this WoWblog before, but I just had to share this.