A keyboard called WOWKeys is trying to make good use of your little touchscreen-based iPhone when it's just sitting there charging itself up. The keyboard includes an actual iPhone dock, and with a switch on the device, you can go from controlling your computer wirelessly to using the keyboard on the phone. The US$100 USB keyboard even has a set of hotkeys that allows you to control things like song changing, volume, and even go to your iPhone's home screen straight from the keyboard itself.
And depending on the apps you have loaded, you can of course use the iPhone to