How many movies have Mike Diederich and Richard O'Brien collaborated on?

They have worked on 2 movies together! Their first movie together was Phineas and Ferb The Movie: Across the 2nd Dimension (2011) while their highest rated movie together was Phineas and Ferb: Star Wars (2014). They have not worked together since Phineas and Ferb: Star Wars (2014).

Crew
Writer
Role
Lawrence Fletcher / Additional Voices (voice)
Crew
Storyboard Artist
Crew
Storyboard Artist
Role
Lawrence Fletcher / Lawrence-2 (voice)
Crew
Additional Writing