More than thirty years on, The Exorcist remains a very powerful film and was a cinematographic milestone in 1973. Repeated duplication of the genre has, no doubt, 'desensitized' a new generation of movie-watchers, though it remains an unnerving masterpiece. It is not difficult to understand why the film generated such a seismic global impact all those years ago, since it imposed an unprecedented sensory attack on the viewer. Regan's vile physical appearance, combined with her vile language and blasphemous diatribe sent a shock wave around the world. Moreover, many people seemed to believe the claims that the film was based on a true story and could therefore actually happen to them. Electricity consumption must have soared for several months in 1973 as people who had seen the film slept with their lights on! It is still not a film I would feel comfortable watching before going to bed. On another level, I found parts of it profoundly moving and actually cried at the end when Regan was finally released from her possessor and wept in the arms of her mother and Father Damien, having lunged himself through a window and down a precipitous flight of steps, managed to find just enough life in himself to indicate that he had retained his faith and repented of his sins by motioning his fingers in the sign of penitence when comforted by a distraught colleague. Possibly the only thing that lets the film down if one really sits and thinks about it is the underpinning concept that an ancient demon which had existed since the dawn of time should wish to possess the body of a twelve year old child and emit a string of juvenile profanities. But then the film was designed to shock all along!