I probably should have ordered one right after the keynote but I wanted to fondle one first. Today I did just that but they didn't have any for sale (wink, wink). So I Just ordered a 1.8/SSD online (delivering Feb 29th) and will hound the stores for one. If I get lucky, I'll cancel the online order.
Seems like everyone here who already has one is pleased with the Air and my short time with one convinced me that I really, really needed one. I tried a reboot and it was quite snappy (1.8/SSD), programs loaded fast, etc. It was too noisy in the store to hear one running but the two I felt the bottom of were no warmer than my cat when she sleeps in my lap.