Add Yahoo as a preferred source to see more of our stories on Google. Christopher Lloyd (L) and Michael J. Fox star in "Back to the Future," returning to theaters Friday. Photo courtesy of Universal ...

Can you believe that Back to the Future turned 40 this year? Now, that's heavy. This sci-fi comedy has had such a grip on pop culture that Back to the Future is soaring back to theaters this weekend.

Forbes contributors publish independent expert analyses and insights. Marc Berman is a New York-based reporter who covers media. Back to the Future, starring Michael J. Fox and Christopher Lloyd, ...