What can be said about Psycho that hasn't been said already? Alfred Hitchcock's masterpiece is often regarded as the greatest thriller/horror movie of all-time, and - even now, all these years later - it still has the power to shock and awe. The plot hones in on Janet Leigh's ill-fated Marion Crane, who steals a bunch of money, goes on the run and makes a terrible decision when she decides to hole up at the Bates Motel. Psycho is infamous for its iconic shower scene, of course - one which leaves the film without a central character for its second half. The best thing about the film, however, aside from its tricksy plottings, is Anthony Perkins' portrait of serial killer Norman Bates; the actor manages to make us feel rather sorry for Bates whilst also being incredibly wary of him, too. Eerie and progressive (with a wonderfully scary score by Bernard Hermann), Psycho is a definite serial killer classic that everyone should experience at least once.