How many movies have Rick Rosenberg and Robert W. Christiansen collaborated on?

They have worked on 22 movies together! Their first movie together was Adam at Six A.M. (1970) while their highest rated movie together was Strangers: The Story of a Mother and Daughter (1979). They have not worked together since Reckless Behavior: Caught on Tape (2007). They are most known for their drama films together.