There are currently 6 (technically now 9, if you could quest-related) world bosses. The 4 green dragons that spawn that the emerald dream portals, Kazzak in blasted lands and Azuergos (sp?), a blue dragon who spawns in Azshara. The fights that people get into over them on my server are hilarious. About two spawns of Az ago, there were no fewer than 5 guilds (two horde, three alliance) all fighting over him and trying to hold the tag long enough to bring him down. It was awesome.
In other news, my guild brought Nef down. We're way behind Sere's, but it felt good nonetheless.
