Just got a Asus Eee PC today. It's extremely small (slightly larger than a piece of paper folded in half) and light (about 2 pounds) and it suits my portable needs perfectly.
The resolution is low and the touchpad is too small, but I don't care because it's much easier to browse the web and read email on this than a phone or a blackberry.
It's also cheap enough that I won't cry if it gets lost or smashed.