How many movies have Lakis Kalivas and Lefteris Siaskas collaborated on?

They have worked on 5 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 A Man for All Jobs... (1966). They are most known for their comedy films together.