Jacques Lacan was a French psychoanalyst and psychiatrist, whose work greatly influenced psychoanalytic theory and its application to film studies. He reinterpreted Freudโs ideas, emphasizing the role of language and the unconscious in shaping human identity and desire. Lacan's theories, particularly concerning the 'mirror stage' and the 'gaze', provide a framework for analyzing characters, spectatorship, and the relationship between viewer and film.