Alfred Hitchcock has the unique distinction of being the only film-maker in history who can be readily identified by nothing more than his silhouette. Through his television interviews and the dry, morbidly funny introductions he performed at the beginning of Alfred Hitchcock Presents, he became not just a director of iconic films, but an icon himself. Yet despite, or perhaps because of, his well-crafted public persona, there is still something fascinatingly unknowable about the man, the obsessive son of a grocer who (allegedly) did everything short of torture his actresses in pursuit of realising the images in his head. There's certainly potential for a great psycho-drama about Hitchcock, or at the very least an interesting one about whether or not the themes that underpin his work - paranoia, voyeurism, a fear of authority - bled into his private life.