How many movies have Katrin Haase and Michael Busch collaborated on?

They have worked on 4 movies together! Their first movie together was Nein, Aus, Pfui! Ein Baby an der Leine (2012) while their highest rated movie together was Die Büffel sind los! (2016). They have not worked together since Die Büffel sind los! (2016). They are most known for their comedy films together.