The movie the gang watches before the failed robbery is Kjære lille Norge (1973), and the angry man 'Benny' finds funny is Arve Opsahl (Egon Olsen). There is even a poster for the movie in the office with a picture of 'Arve Opsahl'.
Only movie where Benny and Kjell is arrested.
In the Danish series, this is the 5th movie.
Arve Opsahl and Anne-Lise Tangstad had previously worked together in Skulle det dukke opp flere lik er det bare å ringe..... (1970).
Aud Schønemann and Elsa Lystad would go on to work together on the popular sit-com, Fredrikssons fabrikk (1990), and in Fredrikssons fabrikk - The movie (1994).