Van de Staak's first feature film, De onvoltooide tulp, consists of twenty-eight dialogues, each performed by a non-professional actor and actress. The staging, interactions, movements, and gestures of the performers vary radically from one dialogue to the next, forming a kind of catalog. More than conversations, the exchanges of phrases, written by van de Staak, possess a realism that highlights the absurdity and comical nature of language.