The film was originally planned to be a direct sequel to Total Recall where Tom CruiseTom Cruise's character was going to be played by Arnold SchwarzeneggerArnold Schwarzenegger and the Precogs were going to be Martian mutants with psychic abilities (a concept established in the former film).
The small storage media used throughout the film are clear plastic versions of Iomega's PocketZip disks.
The "PreCogs" were all named after famous mystery writers. [?] Dashiell Hammett, Arthur Conan DoyleArthur Conan Doyle, and [?] Agatha Christie.
Apparently, Colin FarrellColin Farrell had a lot of trouble delivering the line "surely you understand the fundamental questionability of Pre-Crime methodology".
During the scenes that show Anderton manipulating the PreCogs' visions of future crimes, the music in the background is Schubert's Symphony #8 in B Minor - more commonly known as the "Unfinished" symphony.