How many movies have Graham Nash and Joni Mitchell acted in together?

They have worked on 3 movies together! Their first movie together was Crosby, Stills, Nash & Young - Live in Wembley 1974 (1974) while their highest rated movie together was Joni Mitchell - The Library of Congress Gershwin Prize For Popular Song (2023). They have not worked together since Joni Mitchell - The Library of Congress Gershwin Prize For Popular Song (2023). They are most known for their music films together.