Saw this on one of my favorite blogs and gave it a whirl... it is surprisingly accurate! Give it a try right here. It's easy. He'll ask you four questions about your preferences and diagnose you (P.S. - the password is "character").
My resident psychiatrist says my typeface is "Archer Hairline." It's "a modern type face with a straightforward appearance but one that has tiny outbreaks of elegance and tiny dots of emotion, only apparent on closer examination." Excellent! He said that I'm "outwardly composed but will occasionally run into the bathroom for a quick laugh or a quiet cry, only to reemerge outwardly composed again." Yes. It's true. He knows me!