The Great One: The Life and Legend of Jackie Gleason

From Goodreads:

Two-time Pulitzer Prize-winning critic William A. Henry III delivers the definitive biography of the legendary Jackie Gleason, one of the greatest entertainers of all time and a man who, both on stage and off, was truly larger than life. Henry interviewed Gleason's friends, collaborators and even his antagonists to retrieve the energy of his life and the obscure facts behind the Gleason legend.