If your room is dark, consider a projector... We did this in our basement and love it for a bunch of reasons, but the #1 best reason is that the expensive parts are up on the ceiling, and away from the kids... The screen is inexpensive and can take a frisbee hit/etc without us losing our investment.

Their brightness has been improving but still well below a LCD or Plasma, so again it depends on your room.

Saw "OLED" TVs at CES this year, and holy cow are they amazing. Years away at the sizes you want, but trust me, we'll all own one in 10 years.
_________________________
The charm of fishing is that it is the pursuit of what is elusive but attainable, a perpetual series of occasions for hope. -John Buchan