- Enforced Method Acting: Monica Bellucci claims the easiest take of the rape was the first one to do, because she didn't know exactly what would happen.
- Real-Life Relative: Monica Bellucci and Vincent Cassel, who played lovers, were married when they shot the movie.
- Referenced by...: The music video for Maroon 5's "Maps" was explicitly influenced by the film, as per the band's bassist. It uses the exact same story cuesnote and reverse narrative structure, alongside very similar camerawork and graphic violence.
- Throw It In!: During the rape scene, there's a moment where you can see someone in the distance walking in and then leaving. This was actually not intended; that person was an assistant who didn't realize they were shooting. Noe left it in to show that not everyone prevents crimes.
Trivia / Irréversible