How many movies have Matthew Gray Gubler and Ross Bagdasarian, Jr. acted in together?

They have worked on 4 movies together! Their first movie together was Alvin and the Chipmunks (2007) while their highest rated movie together was Alvin and the Chipmunks: The Road Chip (2015). They have not worked together since Alvin and the Chipmunks: The Road Chip (2015). They are most known for their comedy films together.