If you have several iPhones or iPods, you’ll want to get your hands on the Parasync docking station, which can sync up to 20 iPhones or iPods at the same time. That’s Apple overkill folks.
It’s about the size of a sheet of paper. The Parasync dock is compatible with the iPhone, iPod Touch, iPod Classic and the iPod Nano. It uses only one USB cable and has been certified by Apple to work natively with iTunes. No word on pricing so far.