We assume it's easier to part with an Olympic gold medal when you have four more on your mantel, but still, the legendary Dallas sprinter made us all proud when he dashed toward integrity in June. After learning that four of his U.S. 1,600-meter relay teammates had admitted to taking steroids in preparation for the Sydney Games in 2000, Johnson announced he would return his medal because "I know the medal was not fairly won and that it is dirty." Johnson, who maintains he's never doped, still owns the world record in the 200 and 400 meters and still has a burgeoning training facility in Mc-Kinney. Thanks to his class act, he also still possesses his good name.