Michael J. Fox was saved from performing a dicey stunt in Back to the Future after a heated confrontation between director Robert Zemeckis and the first assistant director.
Zemeckis, 73, wanted the front of a car to push the then-23-year-old lead actor on a skateboard to nail a "certain angle", but assistant director David McGiffert put his foot down and rejected Zemeckis' plan because if Fox fell under the car, the star would be seriously hurt.
