Two that go on my list and the reason:
Ron McCartney - In the early 70's when Bama was in it's heyday, Bama ran an entire game using the wishbone running mostly to only one side of the field. When Bear was asked why after the game, his reply was that McCartney was on the other side of the field and he was running away from him.
Jason Mitchell - not because of his greatness as a player (and he was pretty good), but for his sacrifice of playing the entire season w/o surgery for the good of the team. That is the definition of a team player.