Seriously, the graphics in Halo 3 suck in comparison to other Xbox 360 games (like BioShock and Gears of War). Seriously, look at this.
OMG, THE JAGGIES ARE STABBING ME IN THE EYES! Seriously, where's mah AA? I'm not sure if this is because Halo 3 doesn't correctly support my monitor, but I've read elsewhere about complaints on the lack of anti-aliasing.