Small cameras..
Just a little FYI for everyone about laptops and small cameras..
Here in Japan, we've had cameras in our cellular phones here since late 2000. My newest phone has a megapixel camera capable of recording up to 3 minutes of video (all on 8 megs of memory). The camera is built into the top of the flip-phone, along with a flash, and the whole thing is only about 1cm thick.
So, as for the technology existing to do this right, it's there, and Apple will have easy access to it.
Expect a bluetooth capable phone that will be "iSight technology" compatible within the next 12 months. Apple is always thinking ahead. "iSight technology" is more about enabling iChat AV and delivering "video conferencing for the rest of us" than it is about snazzy firewire cameras.
Videophones are nothing new, but a simple and easy-to-use implementation of them.. that's something special.