How many movies have Joe Sichta and Joseph Barbera collaborated on?

They have worked on 4 movies together! Their first movie together was Scooby-Doo! and the Loch Ness Monster (2004) while their highest rated movie together was Scooby-Doo! and the Sea Monsters (2012). They have not worked together since Scooby-Doo! and the Sea Monsters (2012). They are most known for their family films together.