How many movies have John Viener and Kirker Butler collaborated on?

They have worked on 1 movie together! Their first movie together was Family Guy Presents: Blue Harvest (2008) and was their highest rated movie together. They have not worked together since Family Guy Presents: Blue Harvest (2008).

Role
TV Announcer / Black Guard / Spaceguard #1 / White Guard #1 / Vader Guard #2 / Sean Connery (voice)
Crew
Co-Producer