This is pretty cool. The website has an iPhone running Safari with a Digg browser app that approximates how it will feel to run it on the iPhone when it is finally released. The "flick" scroll function even works!
Use your mouse to drag the lists up and down, then try to flick them like you're supposed to on the iPhone. The back button on the phone is also enabled.
Built with Yahoo! UI Library, PHP and the Digg API.