How many movies have Lakis Kalivas and Nikos Nikolaidis collaborated on?

They have worked on 4 movies together! Their first movie together was Κόσμος και Κοσμάκης (1964) while their highest rated movie together was Μπετόβεν και Μπουζούκι (1965). They have not worked together since Μπετόβεν και Μπουζούκι (1965). They are most known for their comedy films together.