How many movies have Harrie Jekkers and Koos Meinderts collaborated on?

They have worked on 4 movies together! Their first movie together was Harrie Jekkers: Het Gelijk van de Koffietent (1990) while their highest rated movie together was Jekkers & Koos: Het Verhaal achter de Liedjes (1999). They have not worked together since Jekkers & Koos: Het Verhaal achter de Liedjes (1999). They are most known for their comedy films together.