Fluxbuntu
So I've got this real old Pentium III laptop. It's a shudder Gateway no less. What makes it worse is that it ran Windows XP stock. Thats insane, the thing moved like a rock, e.g. not at all unless you kicked it. I've tried multiple different Linux disto's on it over the last year or so, and they were always a tad heavy, or a tad too stupid feeling (I'm looking at you IceWM). The exception was FluxBox, which I experienced on the nUbuntu livecd about a month ago.
So, today I found fluxbuntu, and it rocked my world. No more gnome or XFCE for me, I'm going fluxbox. Loaded it up, and since it is an alpha, it isn't all that pretty. So I made this nice background for it. Anyway, if you have a spare machine, check out the fluxbuntu Alpha, it's pretty good (esp. for an alpha ;)