Apparently there has been an urban myth going around about the No. 12 jersey on the University of Alabama football team.
The jersey, according to the myth, is somehow sacred. Only a player -- specifically a quarterback -- who is thought to be the next all-time great is supposed to be assigned that number. There's even a version that claims that to wear the No. 12, a player has to have the blessing of not only the head coach, but whoever wore it before him.
http://deas.tuscaloosanews.com/default.asp?item=2389538