Stephen Sackur talks to newsmakers and personalities from across the globe. Matthew Bourne is one of the most influential choreographers of his generation. His unique take on the classic Swan Lake won him a large and avid international following, and this Christmas the multi award-winning hit returns to the theatre in London where it began. It's provocative, sexy and funny, but is it true to the traditions of classical ballet? HARDtalk asks, is it necessary to 'dumb down' to win a new audience?