Is it too thin?

No. Don't be stupid. It can never be too thin. The Macbook Air is one small stylish semi powerfull notebook. Weighing just three pounds, less than an inch thick and boasting an intel chip that is 60% smaller. Amazing. Drawbacks? Sure. Can't replace the battery yourself. Not enough USB/Firewire ports. Ipod classic HD, which if you have an ipod classic, you know why that is a bad thing. Still, despite these setbacks Air is very very impressive. I can't wait to make a trip into the Apple store and try out the new touch pad, and hopefully pick it up. (literally pick the notebook up in my arms, not purchase) Well done.