Random Media is todays Macromedia Site Of The Day and its not hard to see why. It showcases some of the possibilities with the Flash Communication Server MX. The site allows you to navigate through a world of audio, text and images and also seems to have a time dimension of sort.
If you have a web cam or a microphone you can add to the mix with your own images and sounds, I found a lot of funny things on my trip through the site.