I think i came to the party late on this one but a number of my long-term filesharing wishes have just been satisfied on soulseek like When in Rome Kill Me by Cud and Long, Lonely Day by the Go-Betweens. Also the only filesharing system with genuine Razorlight (best new band of the year) songs.
Update 2004-04-24: Soulseek is now based at slsknet.org so I’ve corrected the above URL.