How many movies have Debi Derryberry and Keith Alcorn collaborated on?

They have worked on 4 movies together! Their first movie together was Jimmy Neutron: Boy Genius (2001) while their highest rated movie together was The Jimmy/Timmy Power Hour Trilogy (2006). They have not worked together since The Jimmy/Timmy Power Hour Trilogy (2006). They are most known for their science fiction films together.