All of us are anxiously awaiting Cataclysm's going live. Wrath is winding down and people are anxiously anticipating the new content. Some want new raids, some want new dungeons, some want new quests, some want to make goblins or worgen. Some of us are just really excited to see the changes to the old zones, and some just want to get right into the level 80 to 85 content.
I myself am in the beta. I have played it as it has evolved since the friends and family alpha, and I have watched some of the zones go from buggy and near unplayable, with quests not yet implemented, to being far more fleshed-out and nearly ready to go live. I love Hyjal. It has an epic feel; you are right in there battling to reclaim the zone from the Twilight Cultists and the elementals. Deepholm is equally amazing. In the revamped zones, I thoroughly enjoyed the CSI-inspired murder quest chain in Westfall. I have made both a goblin and a worgen and must say, the goblin starting area and Azshara should not be missed. Everyone should make a Horde character and complete the Azuregos and Kalecgos quests in Azshara. On the other hand, I feel Gilneas is a little overscripted and Darkshore is still a little odd.
There is a lot of the world I want to see when Cataclysm launches, but there are places I want to see more than others. Where are you most interested in exploring when Cataclysm comes out? What do you absolutely have to see, and what quests do you want to do? What particular zone excites you the most? Or are you just in it for new dungeons, raids and new shiny epics?