1024x768 here. Sometimes I go larger, depending on what games I'm playing, etc. I used to have HUGE rows with my dad about resolution though. He's farsighted (can't see things very well up close) and likes to set resolution to 800x600 or larger...which I don't have a problem with, except he never changes it back! >.<

I took my computer and moved clear across the country though, so now I'm the only person that uses this rig!