This thing is bare bottom, folks... If you're seriously considering getting one, be sure to check out the specs and make sure it's what you want. You're at least probably going to want to double the RAM if you enjoy running more than one or two apps at once (you always have your IM and email clients in the background, for instance); I am one such person, and my Powerbook originally came with 256MB. When I popped another 512MB in there, the performance increase was dramatic. (If you order it BTO from Apple's site, their RAM is expensive...)
As for playing modern 3D games on this thing... forget it. (But if you want to play games on your computer instead of do productive things, go out and buy a GameCube instead for a fifth of the price.)
Squeeks and others, if you have any questions about our side of the fence (what's the best software to do X, etc), ask away. Welcoming "switchers" is a joy to any Mac freak. :)