How many movies have Roman Knižka and Rudy Ruggiero acted in together?

They have worked on 3 movies together! Their first movie together was Bauernprinzessin I (2004) while their highest rated movie together was Bauernprinzessin III - In der Zwickmühle (2009). They have not worked together since Bauernprinzessin III - In der Zwickmühle (2009). They are most known for their drama films together.