Director Tony Martin had a rule that everyone who worked on the movie had to be seen on screen. Only the focus puller refused, but Martin got lucky when the reflection of that particular crew member is seen in the security guard's window during the Northey/XL9000 scenes. Martin decided not to use optical effects to remove the focus puller so that his rule was obeyed by everyone. Martin reveals this in the DVD commentary.
According to the DVD commentary, the night before the film began shooting, the Melbourne Herald Sun withdrew permission for the filmmakers to use their newspaper in the movie (a subeditor had complained that the fictional "Police Shoot Dead Man 12 Times" headline didn't make sense). The Herald Sun was changed to the non-existent Melbourne Tribune, the same newspaper Judith Lucy worked for in the earlier Mick Molloy comedy Crackerjack (2002).
In the opening scene, a character is shown holding incriminating photos of himself inside a brothel called The Daily Planet. This was a real brothel in Elsternwick, Melbourne. The Daily Planet closed in 2018.
The letter Z is pronounced as "zed" in Australia. However, all references bar one to the ZTU are spoken as "Zee Tee You", as a satirical comment on the Americanization of Australian culture.
Peter Aanensen is playing "Arthur Ferris", the same character he played in the classic Aussie cop drama Bluey (1976). Ferris, who was Bluey Hills' superior in the third series, is here seen working as a security guard at Victoria's Parliament House.