I think being able to picture the photo in you head without looking at it, is also part of 'iconic'. For instance, when I think back about the 'Ali vs Liston' photos, the one that comes to mind at the moment, is the one with his arm across his chest, so obviously, that's the 'iconic' one.
With that quality of 'iconic' in mind, I can also think of Bob Beamon's long-jump and that image of Brandy Chastain on her knees with that little black bra. But I digress.
How about this one?
