Mine is the puppet from the movie "Saw" (plus the sequels, as well as the movie Dead Silence, for those who were paying attention). I used to have at least 5 different avatars, different for each forum, but, once I put this one on, it stuck. I have since changed ALL my avatars to this face. So, if you see "UNOwen" or some variant with Jigsaw's puppet's face, there is a 95% chance you are looking at me!
As for my signature, it developed from the ancient art of purloining, of which my mastery grows slowly each day. Chances are, one of YOUR signatures may end up under my control for a while!