You know what my office--i.e., our rarely used guest bedroom--is missing? A pixelated portrait of Sigourney Weaver (aka Ellen Ripley) as depicted in Konami's Aliens arcade game from 1990.
Unfortunately, although it seems my favorite Atlantan artist, Ashley Anderson, has created just what the doctor (me) ordered, I doubt I can afford the graphite-on-paper portrait (below) he produced. (Assuming it's even up for sale, of course.)
Oh, well, at least I can look at it--via Anderson's Flickr photostream--whenever the fancy strikes me.
See also: Other examples of Ashley Anderson's abilities