Comment Better Graphics Where You Look (Score 1) 102
This can be used for simply concentrating the graphics resources in the area that the eyes are focused. Microsoft Research was showing something like this off at last years SIGGRAPH conference. They are claiming an acceleration factor of 5-6 when using the eye tracking.
Their paper can be found here: http://research.microsoft.com/apps/pubs/default.aspx?id=176610
Having stood by and watched while someone was using the system, it was interesting to see their eye dart around the screen and the little high-quality circle that (presumably) was synchronized with the movements.