The police station is actually a façade that was bolted onto the Los Angeles Central Public Library. The façade itself took the production department five weeks to build, and another one and a half weeks to attach to the Library.
There were plans to do a sequel which never materialized.
When Miles Logan is on the P.A. yelling at the car in front of him, it is the same car from The Big Lebowski (1998) that The Dude drove.
According to Dave Chappelle on Episode dated 3 February 2006 (2006), a scene was written during filming in which his character was to wear a dress while disguised as a prostitute. Chappelle adamantly refused. The writers complained to the producers who then tried to convince Chappelle to do the scene, but he still refused. According to Chappelle, he felt that it was part of a disturbing trend in which African-American men wear dresses in films.
During pre-production, the film was originally supposed to carry a hard R rating, but after deliberations, the studio had to tone down the film's script to PG-13. This meant changing the plot, dialogue, and characters. John August was hired as a "script doctor" to make these changes.