How many movies have Derek Sherinian and Mike Portnoy acted in together?

They have worked on 4 movies together! Their first movie together was Dream Theater: 5 Years in a Livetime (1998) while their highest rated movie together was Sons Of Apollo: Live With The Plovdiv Psychotic Symphony (2019). They have not worked together since Sons Of Apollo: Live With The Plovdiv Psychotic Symphony (2019). They are most known for their music films together.