I frapsed the event on servers today, added music, dialogue, effects etc. I like how they incorporate some of the bosses into the lower level areas, Cho'Gall in Feralas and Deathwing in Badlands so far. I'm sure Cho'Gall will be a big presence in Twilight Highlands questing too.
http://www.youtube.com/watch?v=t5M9mbnM7wU