Yeah, the original FreeGeek here in Portland used to send newer Macs to a Mac-only computer recycler/reuser in Eugene, Oregon; and would literally trash (well, recycle,) the older ones. Whenever they have an event, they have a stage that is made of a hundred compact Macs with plywood on top!

Recently, they started refurbishing Macs, too, though. Generally only iMacs and B&W G3s or newer. I've gotten a couple decent deals from 'em.