I got my new toy -- an Asus EEE PC. It's a fully-functioning laptop, running Linux. It weighs less than two pounds, cost less than $300, and is about the size of a paper-back book. It has built-in wifi and a very small qwerty keyboard. I got it for checking email, surfing the web and taking notes in class. It will also be my main travel PC.
I can't do programming on it. It really isn't suited to photoshop, typing for long stretches of time, or really serious work. So it's perfect.