How many movies have Christoph Walz and Kurt Matthäus collaborated on?

They have worked on 5 movies together! Their first movie together was Falsche Scham - Gefahren der Liebe (1977) while their highest rated movie together was Verbotene Spiele auf der Schulbank (1980). They have not worked together since Verbotene Spiele auf der Schulbank (1980).