Almost all character dialogue is improvised by the actors.
The main actors frequently appear on the show as other characters with their faces blurred. 'Kerri Kenney': Jackie the Prostitute Niecy Nash: T.T. Wendi McLendon-Covey: Water Heater Lady Carlos Alazraqui: Chief Carl 'Ben Garant': Mime, The Streaker
One of the apartment buildings seen in Season 2 was torn down shortly after filming was finished in Carson.
According to an interview with Thomas Lennon (III), the main cast member who ruins the most takes by laughing out loud is Carlos Alazraqui.
In Season 2, the artist sketched wanted posters in the squad room are all modeled off of the crew members of the show.
Scenes for the season two finale could not be shot in the Carson Police Department because an officer was shot. The cast and crew moved across the street to a community center.
The police station scenes are filmed in a real working police substation in Carson, California. According to Thomas Lennon (III), some female employees of the station complained to their superiors about the short shorts that he wears as his Lt. Dangle character.