Everyone drooling over a 1920 x 1080 LCoS display, consider this: Virtually all current digital display HDTV sets have a maximum physical resolution of 1280 x 720 or lower. While you might think a 1920 x 1080 native display (whether LCoS or otherwise) is significantly better, there are several factors that diminish the possible improvement.
Several networks will broadcast in 720p (ABC, ESPN, Fox). Whether the HD display is natively higher resolution won't improve things.
Most current 1080i broadcasts are effectively limited to about 1440 horizontal pixels to lessen the required video compression. In essence, there are no *true* 1080i broadcasts for a 1920 x 1080 HD display to receive.
Actual tests indicate 720p often has roughly equal "practical" resolution to 1080i, despite having half the theoretical pixels per frame. It's very nonintuitive, but sometimes 720p has better resolution than 1080i. This is due to interline flicker and other factors affecting the 1080i interlaced display.
When the day comes that a native 1920 x 1080 display is available at the same cost as a 1280 x 720 display, there's no sense in not getting one. But current 720p native displays are much better than the pixel count would indicate.
http://www.vxm.com/Progvsinter.html 
