How many movies have Ere Kokkonen and Risto Salo collaborated on?

They have worked on 6 movies together! Their first movie together was Viu-hah hah-taja (1974) while their highest rated movie together was Professori Uuno D.G. Turhapuro (1975). They have not worked together since Vääpeli Körmy ja marsalkan sauva (1990).