How many movies have Jerry Lee Lewis and Johnny Cash acted in together?

They have worked on 4 movies together! Their first movie together was The Johnny Cash Christmas Special 1977 (1977) while their highest rated movie together was It's Only Rock 'n' Roll: Rock 'n' Roll at the BBC (2015). They have not worked together since It's Only Rock 'n' Roll: Rock 'n' Roll at the BBC (2015).