Go out and buy a 20" iMac (heck, it's Xmas, and I'd never rack up the courage to get a G5 and a 23" Studio Display). Open the usual amount of terminal windows. Press F9.
Take due note of the fact that the neatly tiled windows still have their original dimensions and leave around half the screen uncovered. Gawk at the sheer amount of pixels flowing around like so much luminous liquid.
I'm going to install Quake on this thing and have a great Xmas. :)