How many movies have Karl-Eberhard Schäfer and Michael Busch collaborated on?

They have worked on 11 movies together! Their first movie together was Voll korrekte Jungs (2002) while their highest rated movie together was Ein Teufel für Familie Engel (2007). They have not worked together since Die Büffel sind los! (2016). They are most known for their comedy films together.