IRLP - Internet Radio Linking Project
Radio to the Internet, the Internet back to another radio. Brilliant Idea! It doesn't exactly fit the purist model for some amateur radio operators, but you do have to admire the clarity of talking 1/2 way around the world. (depending on your Internet connection of course)
The menu system for IRLP should progress into many projects or topics. Hopefully they align in an orderly fashion, with some logic to them. Like it was previously mentioned, hopefully this site is an ongoing piece of work.
One of the best sites, with great documentation http://www.garymcduffie.com/irlp/