Michael J. Fox wasn’t supposed to be Marty McFly. The Back to the Future role originally belonged to Eric Stoltz, a hot young actor who got booted from the movie after weeks of footage were shot.
Stoltz wasn’t the only loser in this Hollywood story: Melora Hardin, the actress originally hired to play the skateboarding protagonist’s girlfriend, also lost the Back to the Future gig when Stoltz got the hook.
via Marty McFly’s Original Girlfriend Goes Back to the Future | Underwire | Wired.com.