The future is now. October 21, 2015, is Back to the Future Day, which is the very day Marty McFly (Michael J. Fox) and Doc Brown (Christopher Lloyd) time-traveled to in Back to the Future Part II, the sequel to the iconic 1985 movie. To celebrate, here are 15 trivia items you may or may not know about the original Back to the Future. — Arno Kazarian