Someone that gets off looking at computer generate images. Usualy the nerdy type that spends hours on news groups downloading anime stuff.
Roomate #1 : OMG, I just hit the jackpot on alt.binaries.graphics.cgi.porno - 20 gigerbytes of fresh jpegs !
Roomate #2 : Dude, is that cgi as in computer generated ?
Roomate #1 : Yeah, ofcourse it is !
Roomate #2 : Jeez, you are such a l4m3z0r pixelpopper.