What you would use for your avatar...

...if animated images were allowed.
Here's mine:
http://www.seangillen.com/avatar4.gif

Edit: Changed to link. Just in case.

I used to have:

http://home.comcast.net/~jscheuer1/side/prof3_ani.gif

But looking back, I think it was a little pompous. I do like the more abstract frame still. Brings back some good memories though.