This movie is shot with camera technique called Automavision, an innovation in which the camera angles and movements are selected by a computer. The media notes explain technique, "a principle for shooting film developed with the intention of limiting human influence by inviting chance in from the cold". There are odd framings and jump cuts within scenes making everything seem a bit unsettled.
The film that Ravn and Kristoffer watch in the cinema-scene is Andrei Tarkovskys "Mirror", one of Von Triers own favorite films.
A number of visual elements were hidden in the danish distribution of this film. These visual elements, called "Lookeys", were part of a contest to find them all. The first finder was to get a price and a role as an extra in an upcoming film.