Soon, all the time-manipulation movies you loved growing up will be musicals, and it will be good. Thirty years after the release of Back To The Future, Marty McFly and Doc Brown will finally take their flux capacitors and accidental mother seductions to the stage in a West End musical. BTTF director Robert Zemeckis will write the show’s book with Bob Gale and Jamie Lloyd, with music written by composers Alan Silvestri, Glen Ballard and, if they keep their wits about them, Chuck Berry by default.