When LaRoche goes to Schine's house, he tells Schine's daughter in French: "Je m'appelle LaRoche, comme une petite roche qui va bientôt baiser ton père par derrière." This translates as: "My name is LaRoche, like a little rock who will soon screw your father from behind." Then, he tells her that in English, it means: "My name is LaRoche, it means a rock. Like the little rocks rolling down a river."
The movie was released approximately two months after the 17 September 2005 derailment of a Metra commuter train that killed two people and injured 80. Although no train derails in the movie, Metra tried unsuccessfully to get the title changed.
Sam Douglas who plays the "Homicide Detective" in a small scene in this film, plays a very similar role as a main character in the PS3 video game "Heavy Rain" where he plays as a private detective and is also one of the 4 playable protagonists