Trivia: Scenes for the film were filmed during the Wimbledon tournament 2003. The actors would walk out on court at the beginning or end of a match as though they were really competing. The officials and spectators were actual tennis officials and spectators, rather than extras. It is the only time in the history of the tournament that this has been allowed.
Trivia: Anne Hathaway sang her own songs in the film.
Trivia: When Miles is stealing money from his mother he looks at the pictures on her dresser. One of the pictures is of Miles and his Dad. It is actually Miles real dad. Miles is played by Paul Giamatti and his dad is Bart Giamatti former Commissioner of Baseball. That is who is in the picture smiling with Miles.
Trivia: Breckin Meyer, who plays Jon, is allergic to cats in real life.
Trivia: When Pete is watching the war movie on the television, you can hear the Wilhelm scream.
Trivia: When the cows push Junior down the mine shaft, a "Goofy Holler" can be heard.
Trivia: Co-star Suzanne Shepherd first read the script, and was absolutely horrified by the explicit sexual content. She broke down crying and begged to not do the film. However, she changed her mind when she met director John Waters, who managed to convince her to stay on.
Trivia: Natalie Portman considers this movie to be her first one that helped her get away from her "Star Wars image".
Trivia: In the original script the movie was supposed to be set in New York City, but after the September 11 attacks the location was moved to Baltimore.
Trivia: Director Peter Howitt has a cameo at the start of the film - he's the husband (Pierce Brosnan's client) in the divorce case.
Trivia: When Crichton talks to "Harvey" (Scorpius in his head) for the first time in the movie, Scorpius is dressed like Einstein. There is a blackboard with equations on it. One of them is "e = MC hammer". (00:21:30)
Trivia: Michael Caine, who plays Henry Lair, is only 10 years older than his on-screen son Christopher Walken (Turner Lair).