>4) The code gnome. Someone who is a competant developer but can't ever be displayed in public for reasons of bad social skills or personal hygiene issues. Often in symbiosis with the "smooth-talker" type.

The "code gnome" is often confused with the "wild-eyed guru". Quite similar. Perhaps a previous name for the gnome is "geek" or "nerd" or even "pencil-neck".