This 1967 movie version of the musical came to the screen just four years after the assassination of John F. Kennedy, and drew upon that sense of sadness and loss, and the wistful account of an optimistic empire cut short, to infuse this film with energy and emotion. Richard Harris plays King Arthur, Franco Nero plays Lancelot, and Vanessa Redgrave plays Guenevere, the woman torn between them. David Hemmings, later of Blow-Up and Barbarella, plays the evil Mordred. If you&rsq