How many movies have Norbert Heisterkamp and Ralph Thiekötter collaborated on?

They have worked on 4 movies together! Their first movie together was Seven Dwarfs (2004) while their highest rated movie together was 7 Dwarves: The Forest Is Not Enough (2006). They have not worked together since Potato Salad: Don't Ask! (2015). They are most known for their fantasy films together.