"I think by the time we finished two and three we were all so damn tired and then Bob [Zemeckis] went on to do Forest Gump and I went on to do some television work and some other things, you know, I started my own show, Spin City. And now the only way it would work would be if I played Doc, I’m 44 years old now and I’m not interested in running around on skateboards! I think after 1,2 and 3 we all kind of felt we had done it. And I think if now they did it again they would do it with a younger cast and just do a different realisation of it, which would be fun and I’m happy to watch it."
Now, don't lose hope just yet: you know those Direct-to-DVD sequels that keep popping up? Like Carlito's Way: Rise to Power, and American Pie: Band Camp? Both of those projects are the product of a new division at Universal called Universal DVD Originals, designed specifically to crank out DVD-only sequels to popular catalog titles. The 'hole is trying to get us all excited because USHE President Craig Kornblau sent an exclamation-point heavy email to a Back to the Future fansite, confirming that the division is "looking at" making a Future DVD sequel. Which, I guess, is great news ... except for the fact that straight-to-DVD sequels are almost generally crap.