How many movies have Claus Clausen and Jens Busch collaborated on?

They have worked on 4 movies together! Their first movie together was The Fairy Tales of the Brothers Grimm: The Frog King / The Meaning of Fear (2005) while their highest rated movie together was The Fairy Tales of the Brothers Grimm: Sleeping Beauty / The Two Princesses (2005). They have not worked together since The Fairy Tales of the Brothers Grimm: The Bremen Town Musicians / Table Set Yourself (2006). They are most known for their animation films together.