I just picked up a Dual 2.0GHz G5 Power Mac for $400 (hooray for Craigslist!), dropped in some drives, installed OSX Leopard Server and now I've got a great family/file server. I can't say I'd recommend a G5 iMac though, as it's pretty much stuck at what it is. Not to mention, if you're looking to run Win32 you're out of luck. However, if you're looking for a server or a great workstation -- right now, the prices for G5 Power Macs cannot be beat.