How many movies have Constantine Sekeris and Crystal Dalman collaborated on?

They have worked on 3 movies together! Their first movie together was Scooby-Doo 2: Monsters Unleashed (2004) while their highest rated movie together was Zathura: A Space Adventure (2005). They have not worked together since Zathura: A Space Adventure (2005). They are most known for their fantasy films together.