Trivia: Robert Downey Jr. was the only member of the cast who was allowed to read the entire script.
Trivia: Samuel Jackson spotted that the eye patch his character wears in the movie switched eyes in the promotional posters announcing the movie in Los Angeles.
Trivia: During the feast in which Christian finds a pubic hair inside of his food, look closely at the drinks on the table. While the camera never calls direct attention to this, if you look closely, Christian's drink is very slightly darker than everyone else's. Earlier in the film, the camera briefly passes over a mural that depicts a woman collecting menstrual blood in a cup. (Along with the image of a woman cutting off pubic hairs, like the one Christian found in his food.) It seems Christian's drink has been laced with something he didn't expect.
Trivia: The "old gangster movie" that's on the TV in Harry's apartment is the fictional movie "Angels with Filthy Souls," which was seen in the movie "Home Alone." The director wanted a detective movie for the scene, and said: "We needed something and I hadn’t figured out what I was going to put on that TV yet...Just as a laugh, we got the movie that they shot for Home Alone off of YouTube...We could never beat it!"
Trivia: This is the first non-English language film to win the Academy Award for Best Picture.
Trivia: The first Marvel film released after Stan Lee's death. In tribute, the usual opening ident, which has the comic book characters in the Marvel Studios logo, instead shows multiple images of Stan Lee.
Trivia: Cats was originally going to be entirely animated. Director Tom Hooper was then brought on and wanted it "live action", with...mixed results.