How many movies have Alvaro Vitali and Gianni Ferrio collaborated on?

They have worked on 10 movies together! Their first movie together was Policewoman (1974) while their highest rated movie together was The Honorable with His Lover under the Bed (1981). They have not worked together since The Honorable with His Lover under the Bed (1981). They are most known for their comedy films together.