Speaking of the AT cluster, I may have more 775dual-VSTA motherboards to donate... I bought 12 of them, sold one of them, gave away one of them, sold another one, and have a shedload of them left. They just aren't selling at the flea, so I might as well donate. All we would need is a few sticks of RAM, DDR or DDR2 (board takes both, not at same time), and some E5200s or E2xxxs, and we could have some half-decent crunchers.
Edit: Whoops, sold one at the flea. Still have a pile of them.