Olympic gold medalist. I just think it's something special to be representing your country and being the best in the world in the sport you competed in. I'm talking about an athletic, physical competition, not that walking sport bullshit the women do.
For fame and money? Heavyweight Boxing Champion sounds nice even though the current heavyweight division sucks balls. I'm only 5'10" and 180 lbs so I'd settle for super middle weight champ.