voyeurism and privacy

His film 'Peeping Tom' is a seminal exploration of voyeurism that examines the psychology of a man who films his victims, directly confronting the viewer's own complicity as spectators.

De Palma repeatedly uses voyeuristic camera techniques and Hitchcockian suspense in films like 'Blow Out' and 'Dressed to Kill' to implicate viewers in the act of watching and violation of privacy.