Here's my side project. I've spent a few months working on an iPhone/iPod/iPad app for when the device is docked in speakers so a group of people can vote on music to play. The trick is that you use it from your web browser, not the phone screen.
Now I'm waiting in anticipation of the App Store queue running its course and approving my app, but would love to see what you all think of it. Come see it in action at http://www.youtube.com/watch?v=21scq3ti5Xs.