OAW, if you'd like to try out Linux without having to go through the hassle of actually installing it on your PC, you can try a live CD version such as SuSE 10 (actually a live DVD in this case) which will run directly from the CD or DVD. That way you can try it out and see if you like it before actually installing it. Personally, I like SuSE pretty well, and have 4 boxes running it at home, as well as a dozen or so here at work.
Knoppix is a live CD that is especially good at hardware recognition, comes with a bunch of applications and games, and has lots of valuable utilities. Many techies consider Knoppix to be a "Swiss Army knife for the PC" as it can read and write many different file formats, such as NTFS, FAT32, HPFS (OS/2), not to mention all the standard Linux formats. It also supports USB devices quite nicely, including scanners, printers, digital cameras, and PDAs. It will even work well with many bluetooth and wireless devices and other networking devices.
Knoppix can be installed to the hard drive, but you probably won't want to do that; it was intended to run from the CD or DVD and is a highly customized (or bastardized) conglomeration of Debian-based stuff. Works well by itself, but you wouldn't want to try to update stuff on it.
Hope this helps you a little!
-Alan