How many movies have Gunter Otto and Günter Weissmann collaborated on?

They have worked on 2 movies together! Their first movie together was Insatiable Janine (1982) while their highest rated movie together was Josefine Mutzenbacher...wie sie heute wär V (1983). They have not worked together since Josefine Mutzenbacher...wie sie heute wär V (1983).