Dell is selling computers with Linux Ubuntu preinstalled. In fact the one I just bought was used to post this.
Nate, congrats. When I thought my power book crapped out a few weeks ago I was going to replace it with a dell/linux laptop but fortunately the folks at the apple store were nice enough to help me despite the fact I’m *way* out of warranty, worked out for them as last month I bough 10.5 and am loving it (whens the last time a new os ran noticeably faster than its predecessor on the exact same hardware right out of the box.