How many movies have Alex de Waal and Kathleen Warners collaborated on?

They have worked on 15 movies together! Their first movie together was Theo Maassen: Neuk het Systeem (1995) while their highest rated movie together was Eric van Sauers: Ridder (2011). They have not worked together since Lebbis: De Paardenpoetser (2017). They are most known for their comedy films together.