I installed Xubuntu 9.10 on this Dell D630 laptop that I had laying around, I have to say I'm really impressed. It auto detected everything except for the wireless card, and it took literally 2 minutes to get that working with Ubuntu's Restricted Driver installer doohicky.
I'm not usually a fan of Ubuntu, but I have to say, It's really come a long way since Breezy (The last time I used it). Couple that with the sily smoothness that is XFCE 4.6, and you've got a pretty powerful distro. It flies on this laptop, which while pretty good, is a bit lacking in the ram dept. (2.2 C2D, 1.5G of ram.)
I am changing my tune about the *buntus, at least for Karmic, I've never had an easier setup, ever.