With WotLK just 3 weeks away, as they did with the release of The Burning Crusade, there is now a world event occuring in WoW.
There's a plague spreading from zombies that attack the major cities as well as suspicious crates. If you get hit you are infected and in 10 minutes or sooner, you become a zombie! When you're a zombie you can communicate with other zombies, you'll have special zombie abilities (in place of your character's normal abilities), but you'll be attacked on site by city guards and other players.
If you die you become normal again, but you can always get yourself infected again.
Seems like a pretty cool world event, and I think Que and some other people will really enjoy this event. There's likely more to happen as it has just launched yesterday.