Before Back To The Future, there was the sitcom Family Ties, in which Michael J. Fox starred as a conservative teen Alex P. Keaton. Fox would go on to be massively famous for playing Alex's time-traveling counterpart Marty McFly, prompting a debate over which role is more iconic. In Back to the Future, Fox stars alongside Christopher Lloyd as well as Crispin Glover, the latter of whom plays George McFly, before Glover's recast in Back To The Future 2.

However, Back To The Future was not Fox and Glover's introduction to one another. A year before starring in the time travel movie Back To The Future, they appeared together in a significant TV show episode. Their roles from before Back To The Future are entirely different from those in the film, their characters having a different relationship. The two major actors' past collaboration puts Back To The Future in a different light,...