If you run a Mac, this is a very nice screensaver.
"Soundstream is a Mac OS X screensaver created with Quartz Composer.
It consists of a randomly moving particle generator (reminiscent of Flurry) that reacts to the sound level picked up by your computer's microphone."
Wow, this is really cool. I wonder if it is spyware that tracks all my conversations and sends those back to the central server for voice recognition? Maybe that will be in the next version.