The one I use at my dad's is the one I had for over 10 years. I usually use it on weekends.
Intel Celeron 433mhz
256 PC133 RAM
some crappy circus logic video card (can't do 1024x768 without changing to 256 colors)
Windows 98SE
The only reason I still use it is for internet and play games that don't work on 2000/XP. I had a P3 1GHz and a ATI Radeon 7200 32MB till my PSU went out and took those down with it too. I loved that computer.
When I can't use my main comp I go to my mother's, which used to be my old comp. Here are the stats:
Pentium III 500Mhz
224MB PC100 RAM (128+64+32)
3dfx 16MB Voodoo3 2000 (!)
10GB Maxtor HDD (had hardware failure; recovered partially)
Windows XP Pro (you'd be amazed how fast it is)
Nope, you don't win because (A) that's not your main comp and (B) it's not the worst.
While we're all bragging about crappy/old comps -- the second slowest/oldest computer I have that still works and is also my only apple computer that I currently own is one of these.....
It's fun to mess around with...and it has sim city and a few other games on it....