How many movies have Casey Kasem and Rich Dickerson collaborated on?

They have worked on 3 movies together! Their first movie together was Scooby-Doo! and the Legend of the Vampire (2003) while their highest rated movie together was What's New Scooby-Doo? Vol. 10: Monstrous Tails (2007). They have not worked together since What's New Scooby-Doo? Vol. 10: Monstrous Tails (2007). They are most known for their mystery films together.