How many movies have Olga Zuiderhoek and René Groothof acted in together?

They have worked on 4 movies together! Their first movie together was Hello Fellow Man (1980) while their highest rated movie together was Theo en Thea en de ontmaskering van het Tenenkaasimperium (1989). They have not worked together since Theo en Thea en de ontmaskering van het Tenenkaasimperium (1989).