I joked to a friend when the app store opened that we should make a handset that the iPhone or iPod could slide into. At the time there was no support for dock-connector peripherals so we would have had to incorporate firmware specific to hard buttons while the iPhone's screen would be the soft buttons. Now with the dock connector opened up or simply using bluetooth, one can make something a lot more integrated. It would be one hell of a large screen on a handset/wand type remote though.