How many movies have Collette Sunderman and Joseph Barbera collaborated on?

They have worked on 10 movies together! Their first movie together was Scooby-Doo on Zombie Island (1998) while their highest rated movie together was Scooby-Doo! and the Sea Monsters (2012). They have not worked together since Scooby-Doo! Stage Fright (2013). They are most known for their mystery films together.