This is one of the greatest movies I've ever seen. This is the reason why I trawl through dreadful pretentious French movies, because they have an annoying habit of making the occasional great film.
That bit in Mulholland Drive two hours in when the two female characters have sex was an interesting scene. Well imagine a film that has scenes like that (both in content and power) every five or so minutes. This film makes so-called erotic films like Eyes Wide Shut and Basic Instinct look laughable. It's brief shot of the orgy at the end alone makes Eyes Wide Shut look pathetic.
If you're searching for the world's best porn film then you've found it. It's very graphic and if you were to say to me that the BBFC are a bunch of prudes then I would laugh at you. How this has an 18 certificate amazes me.
It has well drawn characters, has a real plot of substance and is also a fast paced movie. The film is almost without pretensions, which is almost unheard of from a French film. Whatever few pretentious bits there are, I found to be completely acceptable. Some people might balk at the direction the film takes in the last forty or so minutes, but I think it made complete sense. I got it. I was on the film's wavelength so I accepted every odd curve the film threw at me.
It also has a very striking opening when a private moment turns out to be not so private when the camera pans. I knew she was in a theatre, but I was shocked at how public a performance it was.
If you like the great surrealist film Belle De Jour (about a bored housewife who joins a brothel) then this is a must see. Also I would recommend the excellent Death In A French Garden, an explicit thriller from the 80's.