This is the first full-length biography of the man who knocked out heavyweight champion John J. Sullivan, and who also knocked out audiences who flocked to see him in vaudeville and silent pictures. The focus herein is on the real man, the influences on his life, and the social and commercial environment within which he functioned. The author reveals that Corbett was a complex, driven, enigmatic man whose dedicated participation in popular entertainment changed American social values and mores, and at the same time reinvented the notion of a national hero.