MacBook Air.

Needless to say, very cool looking, and very technically impressive in terms of how they were able to make it so small.

For me personally, I wish they'd have introduced a subnotebook instead though. To be honest, the Apple notebooks are reasonably thin already. But I'd rather have something with a smaller width and depth, and technologically, doing that doesn't require the huge capability sacrifice that ultra-ultra-thin does. The form factor of my 12" PowerBook still is a better fit for my needs, so I was hoping they'd do something along those lines or a bit smaller. Maybe in a couple years time...