How many movies have Antonio Siciliano and Giancarlo Morelli collaborated on?

They have worked on 19 movies together! Their first movie together was Buttiglione diventa capo del servizio segreto (1975) while their highest rated movie together was Compagni di scuola (1988). They have not worked together since Compagni di scuola (1988). They are most known for their comedy films together.