Meet 'Mr Goody'...found Googling one day and named by my daughter. Surprise for me was that I grabbed him for my print business cards, and didn't know it was a moving .gif 'til I emailed it home to my husband...and he started dancing in the email!
oh and by the way, this is a great thread... I wonder the same thing. People (like me) will sometimes have who the pic is of in their sig line, but for those who don't, come forth and share your life with us!