How many movies have Alan Sheretz and Dan O'Bannon collaborated on?

They have worked on 1 movie together! Their first movie together was Dark Star (1974) and was their highest rated movie together. They have not worked together since Dark Star (1974).

Role
Bomb #19 (voice)
Role
Sgt. Pinback alias Bill Fruge
Crew
Special Effects
Crew
Editor
Crew
Screenplay
Crew
Production Design
Crew
Original Story