How many movies have Peter Welz and Stefanie Stappenbeck acted in together?

They have worked on 3 movies together! Their first movie together was Biology! (1990) while their highest rated movie together was Viel Spaß mit meiner Frau (1997). They have not worked together since Viel Spaß mit meiner Frau (1997). They are most known for their drama films together.