lcd at about 19"-22"
You want a big screen but low resolution? That will be hard to find. If 1600*1200 (typical native resolution for monitors 20" and up) is too much you can always run it in 800*600 which is cool because pixels are just as sharp as in 1600*1200, they are just twice as big. This would work also for monitors that are not so good at downscaling.