The moment after you finish installing The Burning Crusade, what is the first thing you are going to do?
While I would like to immediately run over to Outland with my warlock or pally and start the quest for 70, I think I am going to take a more laid back approach. My plan is to roll a couple alts and check out the new starting areas. I want to see those areas pretty badly, and I don't think they will be any more or less jammed than the new post-60 zones.
What are you going to do first? Roll a Blood Elf pally? Join the first instance party you can find?