How many movies have Bobby Martin and Chad Wackerman acted in together?

They have worked on 4 movies together! Their first movie together was Frank Zappa: The Dub Room Special! (1982) while their highest rated movie together was Frank Zappa: Does Humor Belong in Music? (1985). They have not worked together since Frank Zappa: Live in Barcelona (1988). They are most known for their music films together.