 "A Hard Day s Night" captured Beatlemania as it was happening, and more than four decades later, it remains a peerlessly zesty rock  n  roll fable. Director Richard Lester s jump cuts now seem exhilarating as Jean-Luc Godard s, John Lennon s wisecracks as well timed as Groucho Marx s. Yet this original Fab Four movie is innocent in a way no other later rock  n  roll film could be, and much of the credit must go to the thousands of screaming teenage girls in the audience--the ones who s lips form such magical words as "John!" and "Paul!" and "George!" and "Ringo!" while tears stream down their cheeks. When Lennon and McCartney shake their mop tops in unison after the line "She loves you, and you know you should be glad!" it sends the audience into hyperspace. Watching these Liverpool Lads get their first taste of audience frenzy, you understand why the  60s had to happen.