How many movies have Norbert ter Hall and Theo Maassen collaborated on?

They have worked on 9 movies together! Their first movie together was Theo Maassen: Functioneel Naakt (2001) while their highest rated movie together was Theo Maassen: Situatie Gewijzigd (2020). They have not worked together since Theo Maassen: Onbekend Terrein (2023). They are most known for their comedy films together.