Gnotella
I've rediscovered the Gnutella client Gnotella which is now at version 1.0!
This first major release is incredible compared to the betas. Non-firewalled clients have a great response time and searching in much more efficient than the old days of P2P networks.
I've downloaded the entire Paul Simon Graceland album over the past two nights. I'll have to buy this CD, as I'm enjoying almost all the songs. Love the African backups.