If you want to get a kick, run UT2K4 in software mode, it's funny

The software renderer itself isn't so bad, but it renders stuff at different resolutions; your HUD and weapon are at native res, whereas the rest of the world is at half-res (quarter res if you actually count the number of pixels) and then scaled up with bilinear filtering to full size. Also textures are, shall we say, a tad low res. Like terrain is 10x10 instead of 1024x1024
