One who makes themes, and skins for *nix window managers ICQ, Winamp and other themeable software. Theme geeks are often disparaged by real programmers for valuing eye candy over function, but are well respected by most users and other theme geeks for the ability to make computer interfaces less fugly.

Many theme geeks are also hardcore IRC addicts, where they hang with other theme geeks, exchange screenshots, and make fun of photoshop wankers (or GIMP wankers, if they're Linux diehards).