How many movies have Gerd Fitz and Olf Fischer collaborated on?

They have worked on 4 movies together! Their first movie together was Der Komödienstadel - Der Geisterbräu (1963) and was their highest rated movie together. They have not worked together since Der Komödienstadel - Die hölzerne Jungfrau (1990). They are most known for their comedy films together.