The world knows him as "The Greatest" the boxer who redefined the image of sports heroes by fighting his toughest battles outside the ring. Muhammad Ali was possibly the most famous man in the world during his extraordinary career as three time heavyweight boxing champion. Ali's undisputed prowess, good looks and eloquent sass brought him unprecedented fame for an athlete. He basked in the spotlight - and shined it on the problems of the day, from race and religion to war and healing. Today, he is one of the world's most beloved athletes. Ali fought professionally for 20 years, from 1960 to 1981, and his life was so brassy and daring, so enlarged by the magic of his personality and the play of his mind that no one remotely like him has ever been seen on the sporting scene. He was simply the most gifted and unforgettable athlete-performer of his time. "I'm bigger than boxing," he used to say, and he was. Fighter and charmer, butterfly and bee, no sports figure has come close to matching his international impact. Ali came of age during the social upheaval wrought by the civil rights movement and the Vietnam War. Through many comebacks and at least one retirement, Ali never lost the capability to captivate the world through his beliefs, his charisma, and his athletic instincts. Ali himself became one of the decade's most controversial figures when he refused to fight in Vietnam. His decision initially damaged his career, but the test of time has proven that he showed wisdom and fortitude far ahead of his time. He became a lightening rod for African-American self-awareness and a devout follower of Islam. Today, Ali is a champion for tolerance and understanding. The courage and dignity he has displayed in his struggle with Parkinson's syndrome has been an inspiration to the world. His recent book, Healing, is a motivating statement on acceptance and overcoming bigotry and prejudice. Ali remains the greatest of all time, the most important figure that the game has ever produced, and its largest, most charismatic performer. His recent struggle with Parkinson's syndrome proves he is a tenacious fighter and has sparked vigorous scientific research and fundraising efforts. He shares his new insights into spirituality and the wonder of life with his wife, Lonnie. With passion and humor, Ali and Lonnie reflect on issues of empathy, decency and brotherhood and challenge audiences to reevaluate their preconceptions and work together to chart a new destiny for the world.