Mary Harron (I) (screenplay) &
Guinevere Turner (screenplay)
Edward Norton was offered the part of Bateman but turned it down.
Bateman excuses himself from a conversation by claiming he has an appointment with "Cliff Huxtable". This was Bill Cosby's character's name in "Cosby Show, The" (1984).
Patrick Bateman works at the same fictional firm as Sherman McCoy in Bonfire of the Vanities, The (1990) - Pierce and Pierce.
Stars Christian Bale and Willem Dafoe have both played Jesus in previous films: Bale in Mary, Mother of Jesus (1999) (TV) and Dafoe in Last Temptation of Christ, The (1988). In English Patient, The (1996), Dafoe played opposite Jurgen Prochnow, who played Jesus in Seventh Sign, The (1988).
The movie appearing on Bateman's TV while he's working out at home is _ Texas Chainsaw Massacre, The (1974_ ).
The song "Hip to be Square" by Huey Lewis and the News was in the movie, but when Lewis found out what the movie was about, he insisted that the song not be included on the movie's soundtrack. The song was on the already-released soundtrack album, but the company managed to recall most copies.
The events that Bateman mentions in the phone message to his lawyer are events that transpired in the book by Bret Easton Ellis, but not in the film.
Guinevere Turner, who plays Patrick's friend "Elizabeth" (in the scene with Christie the call girl), also wrote the film's screenplay.
All of the business cards read "Vice President".
