How many movies have Sigi Rothemund and Walter Sittler collaborated on?

They have worked on 7 movies together! Their first movie together was Lebenslang ist nicht genug (1997) while their highest rated movie together was Ein Fall für den Fuchs - Das Spiel ist aus (2006). They have not worked together since Die Jagd nach dem weißen Gold (2012). They are most known for their comedy films together.