How many movies have Michael Büttner and Rainer Peets acted in together?

They have worked on 4 movies together! Their first movie together was Lonely Wives (1972) while their highest rated movie together was Between the Covers (1973). They have not worked together since Ob Dirndl oder Lederhose - gejodelt wird ganz wild drauflos (1974). They are most known for their comedy films together.