Francine Stock takes a look back at the 1960s with a man who gave us some of its defining images - director Richard Lester. He made the Beatles' films Help and Hard Day's Night and the quintessential 60s sex comedy The Knack. But by the end of the decade, it was all very different. And two of Lester's films - Petulia and The Bed Sitting Room - dared to say that. Now, after years of neglect, those films are available again. Lester revisits the 60s as they lost their swing.