George Foreman, Heavyweight, 76-5
Gold Medal - 1968 Olympics, Mexico City, Mexico
Insert George Foreman Grill joke here. Insert joke about all his sons being named George here. At this point in his celebrity career, it's almost too easy to take pot shots at the once dominant heavyweight champion. However, prior to his career as the king of the fat-reducing grill, Foreman may have been the hardest punching heavyweight of all time, recording 68 knockouts over a pro career that spanned nearly three decades.