version 0.21 of the new eXeem software was just released. its a p2p network application based on the greatness of BitTorrent.
eXeem kinda works like Kazaa. you connect to a network and search files. Kazaa never checked or verified files, so you'd end up with a lot of corrupted files. since its based on bittorrent, files found with eXeem pass a hash check to verify they are good.
while its still new, and the network is small, its growing fast.
http://www.exeem.com/