How many movies have Martijn van Nellestijn and Richard de Ruijter collaborated on?

They have worked on 8 movies together! Their first movie together was Sinterklaas en het Geheim van de Robijn (2004) while their highest rated movie together was Sinterklaas en het geheim van het Grote Boek (2008). They have not worked together since Sinterklaas en de Pepernoten Chaos (2013). They are most known for their family films together.