Not the best, but my favourites. (Can't decide on the fifth)
Muhammed Ali
Cathy Freeman
Johah Lomu
Malcolm Marshall
Clive Sullivan or Socrates
Personally I would have put Plato ahead of Socrates.....sorry !
I do feel guilty about not including any women but Cathy Freeman is a good choice, especially as she represented the Aboriginal people of her country with such dignity.