I've got it narrowed down to two options: the Nikon D60 and the Canon Digital Rebel XSi. They're both relatively entry-level, as digital SLRs go, but good enough that it would take me a while to get good enough to max out their capabilities. I'm leaning pretty heavily towards the Canon -- it's more expensive, but it has some nice bells and whistles, and I think it's a little bit of a better quality camera. The only real downsides are that the shutter button is in a bit of a weird place (which I would get used to after using it for a week, but which is weird when you're just picking up the camera to try it out), and that the Nikon has a better warranty. And the price thing. But I've got the money saved, and I don't think this is something I really want to scrimp on.
So now I just have to make sure I'm really really sure, and then go out and buy it. Which I should do in the next couple of days, since I'm going home for Thanksgiving next weekend, and that'll be a great chance to take lots of pictures and practice. Plus I can't not have a camera for Thanksgiving!
All this to say... you can probably expect to get inundated with pictures in the next little while, as I go camera-happy.