Eric stoltz back to the future, Every Back to the Future fan worth his or her weight in…uh, Back to the Future knowledge knows that Michael J. Fox was not the first actor cast in the role of teenage rascal Marty McFly. Due to a scheduling conflict—Fox was in Family Ties at the time—actor Eric Stoltz was hired instead, and it took five whole weeks of shooting to realize what a mistake that was.
After some schedule finagling, Michael J. Fox was hired for real (he filmed Family Ties during the day and Back to the Future at night) and the entire Eric Stoltz fiasco was nothing but a bad dream and a story spread by word of mouth to fans of the time-traveling film series. For years, that’s all it was: a story. Until now, there was no video evidence to speak of, at least not for public consumption.