So I finally took the plunge. Last night after work I picked up a Powerbook G4. So far, I'm in love. This is what I've been looking for in a laptop all these years. First off, the hardware. It's titanium, which is just too cool. The laptop has a very clean, sleek look to it. The keyboard is fairly comfortable, I do like the feel of the keyboard. I'm still getting used to the single mouse button, but I think I'll be able to cope.
Now, as far as OS X goes. This is the other thing I've been looking for all these years. Something that gives me unix running on a laptop with a really slick interface. And that's what I've got here. I've always liked the feel of MacOS (though I really haven't used it since college), but I've always felt constrained by the lack of a kind of command-line interface. And now it doesn't only have one, it has one that is unix! So far I've built the apps I usually use with no problem.
The other bonus thing I realized is that this can now become my new development platform. I can have apache+php with mysql running on this box so that I can work offline on any web projects I have. The one thing I don't have yet is the wireless card for the Powerbook, but I'm hoping I can find it pretty soon.