A pretty neat little app that appears in your menu bar (on Mac OS X, of course) is BluePhoneMenu. There’s some little bugs left and the app is under development, but for now it is quite handy (haha) to see who’s calling right on your screen and to be able to check the battery status without having to look at the phone.
We’re getting another step forward to your mobile phone being just a hub for your communication needs. Combine a bluetooth headset, Apple’s Address Book SMS functions and BluePhoneMenu and your phone can stay in your jacket.
Unless you need to charge it, of course.