Firelands bosses Lord Rhyolith, Alysrazor, Shannox, Baleroc, Fandral and Ragnaros all have their voice emotes in with the new patch 4.2
PTR patch. Want to take a listen? They are all right here! Fair warning for spoilers and all that jazz, so hit the jump for the full clips.
This post contains patch 4.2 spoilers.