The character played by Rick Engelkes is called Dr. Simon, a reference to his character Dr. Simon from Goede tijden, slechte tijden (1990).
Cameo: rapper Brainpower plays a colleague of Jasper, who wants to have coffee when Jasper makes a call to the hospital. Earlier in the movie, Jasper and Gijsje sing along to his song 'Non stop' while in the car.