Brian De Palma two categories, his psychological thrillers ("Sisters", "Body Double", "Obsession", "Dressed to Kill", "Blow Out", "Raising Cain") and his mainly commercial films ("Scarface", "The Untouchables", "Carlito's Way", and "Mission: Impossible"). He has often produced "De Palma" films one after the other before going on to direct a different genre, but would always return to his familiar territory. Because of the subject matter and graphic violence of some of De Palma's films, such as "Dressed to Kill", "Scarface" and "Body Double", they are often at the center of controversy with the Motion Picture Association of America, film critics and the viewing public.
Brian De Palma providing the audience with a visceral and disturbingly emotional experience. De Palma describes the sequence as a constant invocation of Brechtian distanciation: "First of all, I am interested in the medium of film itself, and I am constantly standing outside and making people aware that they are always watching a film. At the same time I am evolving it. In "Hi, Mom!" for instance, there is a sequence where you are obviously watching a ridiculous documentary and you are told that and you are aware of it, but it still sucks you in. There is a kind of Brechtian alienation