Azureus (now called Azureus Vuze) is the best bittorrent client I have ever used. It's quite amazing. It's got a lot under the hood. Way more than I could even talk about intelligently. But that is great - if you know your stuff, you can get a lot of performance out of Azureus. Bittorrent is a bit of an arcane art (and, of course, getting a bit of a bad rep, since it's the major avenue for P2P pirating.) It is cross-platform and written in Java (and, I think, shows off the strength of the Java framework.)  People have written all sorts of cool plug-ins for it. The next version of Azureus, called Vuze, which I haven't yet used, looks like it incorporates a media player and channels and such. Basically, becoming a serious competitor for Miro, which I'll talk about in the next post. This isn't really such a useful tool for most organizations, although having a bittorent client around for downloading Linux ISO images is really useful, and on breaks, you can watch the occasional episode of the Daily Show... (just kidding.)