How many movies have George Lucas and Peter Walpole collaborated on?

They have worked on 12 movies together! Their first movie together was Star Wars: Episode I - The Phantom Menace (1999) while their highest rated movie together was Star Wars: Episode II - Attack of the Clones (2002). They have not worked together since Star Wars: Episode II - Attack of the Clones (2002). They are most known for their action films together.