OLED's

I agree OLED's would be a really good choice for displays in general.
They're light, bright, good on power.  You do see them on camera displays
occasionally.

Unfortunately, large-scale and large-sized OLED's have been 3-5 years off for at least 6 years
now.  I remember seeing a IEEE Spectrum article on the various TV techs and OLED and SED were
in there.  

Some recent news on OLED: 

http://www.engadget.com/2007/12/11/sonys-stringer-oled-tv...

So OLEDs (and SEDs) are probably still 3-5 years out.