How many movies have David Ellefson and Marty Friedman acted in together?

They have worked on 4 movies together! Their first movie together was Megadeth: [1990] Rust in Detroit (1990) while their highest rated movie together was Megadeth - Live at Hammersmith Odeon (1992). They have not worked together since Megadeth: Monsters Of Rock 1998 (1998).