Now this is cool. Apple has filed a patent for an LCD display embedded with tiny "cameras" within the pixels. Since Apple is putting an iSight on the top of the monitors now, this could allow more natural looking video conferencing.
I wonder if this will be more of a privacy concern. This post describes how someone could set up their computer to "spy" on whoever is in front of the computer. It is easy to deter the this now, just by blocking the camera lens. But when the whole screen is the camera, it will be less likely that someone will even think of doing this.