In this week’s newsletter: From A Space Odyssey to The Exorcist II, audiences can turn a serious film into an accidental comedy – but where does the line fall between laughing with a film, and laughing at it? Before every screening at the West End’s Prince Charles Cinema, a public service message is played. It’s usually one read by John Waters , welcoming cinemagoers to the “most depraved and beautiful movie theatre in London”, before imploring them to “turn off your cellphone, asshole”. More re