Sony is planning to enable future versions of its PlayStation gaming console to recognize user gestures and even emotions, according to a company executive. The PlayStation 3 may also incorporate a motion sensor and camera add-on similar to Sony's EyeToy.
Source:
C|NET
I have had a chance to use the EyeToy. Its fun, but more of a novelty. Concentrated fun for a short period of time tho, so it serves its purpose, I guess. This technology does bring up some other applications, as this article illustrates. This all sounds pretty cool.