 Back to the Future not only boasts one of the best blockbuster scripts ever written, but many consider it a perfect movie. Back to the Future is a perfect movie. Which is why it's so shocking to learn that we almost got a very different movie that wouldn't have even featured the film's iconic DeLorean or Michael J. Fox's Marty McFly. So let's dive in and take a look at what could have been the original version of Back to the Future. Writer Bob Gale came up with the idea for Back to the Future after finding his father's high school yearbook while visiting his parents.