How many movies have Hanns Zischler and Petra Zieser acted in together?

They have worked on 5 movies together! Their first movie together was Der Leibwächter (1989) while their highest rated movie together was The Edukators (2004). They have not worked together since Katie Fforde: Ziemlich beste Freundinnen (2018). They are most known for their drama films together.