Mouse miles tracker (like a pedometer for your mouse), bandwidth generator (crank it up), H2O-powered internet (take the concept of streaming to a whole new level), or live tv delivered over the net via a vintage television set. Just a few of the experiments and projects at Coin-Operated. via b3ta - they love the web
Potatoland takes code and images from any site and turns it into web art, if it doesn't crash your browser instead. Start with the NetFlag link and work your way down. If you only have time to check out one distraction, pick RIOT; it's an alternative web browser that builds its page and makes art by combining text, images and links from the recent pages that any RIOT user has surfed to. You can check out what's been surfed and combined recently, and add your own sites to the mix. Right this minute the combo is Wired, Fray, and ABC.