Regarded as "The Greatest", Muhammad Ali's boxing, political, and cultural career is the most influential and impactful of any sports figure past or present. His high-octane showmanship, backed by the potency of his punches, captivated the public's imagination for decades. There simply has never been anyone quite like him. From his inspiring boxing brawls with George Forman and Joe Frazier to his meetings with world leaders, Muhammad Ali's life and career was deemed a national treasure in his own lifetime.