Of note mainly for Charles Berling's great central performance as a bored philosophy professor overcome with a major case of sexual obsession. It's fascinating and creepy to see his character first deny his passions, then turn into a jealous lover stalking his unfaithful object. Too bad, however, that like Brigette Bardot in Contempt, Sophie Guellemin is playing an object, not a character. Especially since a woman with her zaftig physique is rarely seen as a sexual being in film.
Both it and Ennui are based on novels by Alberto Moravia, someone whose work I've never read.