How many movies have John Amplas and John Harrison collaborated on?

They have worked on 4 movies together! Their first movie together was Dawn of the Dead (1978) and was their highest rated movie together. They have not worked together since Day of the Dead (1985). They are most known for their horror films together.

Role
Nathan's Corpse (segment "Father's Day")
Crew
Original Music Composer
Crew
Casting
Role
Screwdriver Zombie
Role
2nd Guy on Roof (uncredited)
Crew
Assistant Makeup Artist