How many movies have Ben Burtt and David Prowse collaborated on?

They have worked on 4 movies together! Their first movie together was Star Wars (1977) while their highest rated movie together was The Empire Strikes Back (1980). They have not worked together since Return of the Jedi (1983). They are most known for their science fiction films together.

Crew
Sound Designer
Role
Darth Vader
Role
'Freeze' Officer in Endor Bunker / Tortured Power Droid (voice)
Crew
Sound Designer
Role
Darth Vader (performer)