How many movies have Jeffrey Marcus and Rockne S. O'Bannon collaborated on?

They have worked on 6 movies together! Their first movie together was Alien Nation (1989) while their highest rated movie together was Alien Nation: The Enemy Within (1996). They have not worked together since Alien Nation: The Udara Legacy (1997). They are most known for their science fiction films together.

Role
Albert Einstein
Crew
Characters
Role
Captain Bryon Grazer