toothbrushes charge themselves, by inductance. We’ll save you the Physics 101 lecture and just note that inductance allows you to transfer power via electromagnetism, which means no wire necessary.
The one caveat is that only devices that support a SplashModule power receiver can be charged this way. Nevertheless, if more devices support this type of charging, you can have one central place to juice up your phone, PDA, Bluetooth headset, iPod and digital camera. Wouldn’t that be nice?