Just had a thought. It's going to be pretty fantastic once the jailbreak for the 4S is released. Since once your jailbroken you can setup a VNC server, you should also be able to tap into that server without actually getting the video feed. That way you'll be able to sit at your computer, and if your phone is somewhere else in the room but not near you, you'll be able to activate it using your computer (dashboard widget anyone?).
Just a random thought I had
Just a random thought I had