The title of the book that the film is based on is "Grisfesten" (The Pig Feast), but director Bo Widerberg changed the title to avoid confusion with Sällskapsresan eller Finns det svenskt kaffe på grisfesten (1980), a very light-hearted comedy which subtitle translates to "Will there be any Swedish coffee at the pig feast". Also, seeing as this was Widerberg's first proper cinematic release since the highly successful Man on the Roof (1976), both police films, the title chosen connected to the former, both starting with "Mannen" (The Man).
Do you feel the smell, Johan? I feel a scent of pussy starting now.
The sound from the TV as Johansson is celebrating Christmas with his son and his ex-wife has the items of the Disney Christmas Special, shown every Christmas in Sweden, coming in the wrong order. When they are sitting in the sofa, the sound is from Clown of the Jungle (1947), whereas when Johansson is leaving, the sound comes from the end of Santa's Workshop (1932), which is always shown first.
There are no end credits for this film. All credits are shown at the beginning, and at the end, the film simply fades to black.