How many movies have Matti Mäntylä and Pertti Aherva collaborated on?

They have worked on 4 movies together! Their first movie together was Kaikenlaisia karkulaisia (1981) while their highest rated movie together was Likainen puolitusina (1982). They have not worked together since Yön saalistajat (1984). They are most known for their comedy films together.