Flybook size comparison
I came across the Flybook a couple months ago. It’s fits into a line of laptops that go by the name “handtop“, because they fit in the palm of your hand. Here’s a more refined definition:

A handtop is a full-featured portable computer that is slightly larger than a PDA, but much smaller than a laptop. Sometimes called an ultrapersonal computer, a handtop offers hardware, software, performance, and display cababilities similar to those of a laptop in a form factor about the size of a paperback book. Vendors propose that people could use the small portables not only as PDA and laptop replacements but as desktop replacements as well.

The Flybook has 512 Mb of RAM and a 40 Gb hard drive (for more specs go to the website). As you can see from the picture it has a great form factor, it looks sleek, and it can fit in a small bag easily. If you want a good travel computer, this just might be the way to go.
Flybook close-up
The only drawback that I’ve heard of is that the Transmeta CPU, which clocks in at 1 Gig, has a problem running more than 1 or 2 programs at a time. The way I run my computers that would be a problem, but other’s mileage may vary.

There are other options in the handtop arena. The Oqo is even smaller than the Flybook, and I’m really impressed with what is included in such a small package. It’s hard to believe that it can run a full version of Windows. It actually comes with a 1 Gb CPU and a 20 Gig hard drive. Not to shabby for what could be considered a really fat PDA.
Oqo - Incredibly Small!