This year marks the 30th anniversary for Back to the Future. To commemorate October 21, 2015, which is the date Marty McFly heads into the future in the movie, Amazon is making all three movies in the trilogy available for free during the month of October. If binge watching all three episodes this month isn’t enough for you, Universal Pictures is releasing a 30th anniversary Blu-ray/DVD special edition bundle this month for the trilogy.