Thanks all. I'm trying to justify the purchase. Right now I have a 5 year old Thinkpad T60 that more or less works. Sometimes the sound card disappears. Some keyboard keys are a little tricky sometimes...but overall it's a perfectly fine computer for my needs.
But I want a new one! One that has a battery life more than 10 minutes!
I'm also a little hesitant about going from my current 15" laptop to a 11" one, but after playing with one at Best Buy I think it'll be OK.