Trivia: There are several places where Edward Norton sees Brad Pitt for a split second before he actually meets him - beside the photocopy machine, talking to the doctor, at the testicular cancer group, when Marla is in the alley, and when watching TV when the waiters say "Welcome". Also Tyler is the one who steals the Camaro after Tyler and the narrator meet for the first time.
Trivia: In the opening musical sequence when they jump out of the pool, the lady behind Austin can be seen laughing because her swim hat has fallen down.
Trivia: In the entire film, there are only two "homegrown", real humans - Tank and Dozer. They both have names of machines.
Trivia: Julian was played by twins Cole and Dylan. You can tell which twin is in a scene as Cole has a mole on his left cheek which is paticularly visible in close up.
Trivia: The Terror Incognita roller coaster is actually The Hulk roller coaster in Universal Studios, Orlando.
Trivia: In both Jaws and Deep Blue Sea there is a scene involving a license plate. In Jaws it is removed from the belly of the dead tiger shark. In Deep Blue Sea it is removed from the teeth of a tiger shark. Not only are both sharks the same kind but both plates are from Louisiana. The license plate number is the same in both films: 007 o 981 Exp 72-73.
Trivia: The house with the blue door (William's residence) was formerly the home of the movie's screenplay writer, Richard Curtis.