After the publication of his pioneering book Sexual Excitement in 1979, Robert Stoller devoted the last 12 years of his life to the study of the pornographic film industry. To do so, he conducted an ethnographic study of people working in the industry in order to find out how it produced ‘perverse fantasies’ that successfully communicated sexual excitement to other people. In the course of his investigation he observed and interviewed those involved in the making of pornographic films. He hypothesized that the ‘scenarios’ developed and performed by people in the porn industry were based on their own perverse fantasies and their frustrations, injuries and conflicts over sexuality and gender; and that the porn industry had developed a systematic method and accumulated a sophisticated body of knowledge about the production of sexual excitement. This paper explores Stoller's theses and shows how they fared in his investigation.