David "Zoid" Kirsch, id software programmer, originally hired because he was the original author of the widely-popular CTF Quake mod. He is also the original porter of Quake 2 to Linux and was id's all-around UNIXy guy for a while. Apparently he likes fried chicken.

Last I was aware, he's openly gay (though not blatant about it), quite brave of him considering the rather homophobic (as a whole) Quake community.