How many movies have Gerhard Schirlo and Matthias Müsse collaborated on?

They have worked on 4 movies together! Their first movie together was Geisterstunde - Fahrstuhl ins Jenseits (1997) while their highest rated movie together was Killing Is My Business, Honey (2009). They have not worked together since Wickie the Mighty Viking (2009). They are most known for their comedy films together.