Movie fans all around the world are today celebrating 'Back To The Future Day', marking the exact date that Doc Brown and Marty McFly travelled to in the 1989 sequel, Back to the Future Part II. In the film, the pair ride the DeLorean to October 21, 2015 and find a world of hoverboards, self tying shoelaces and a few things that actually are now a reality.

back to the futureMichael J Fox and Christopher Lloyd in Back to the Future Part II.

Fans from all over the globe having been getting in on the Back To The Future-themed fun, with many cinemas showing all three films from the franchise back to back. There’s also been plenty of action on social media, with #BackToTheFuture trending worldwide.

Of course a lot of the talk has been about the differences between 2015, as depicted in the movie and the reality of life today. No we don’t yet have flying cars or self-tying shoelaces (though that may be coming) and fax machines are actually a thing of the past rather than commonplace.

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However the film did get a few things right, including video calls ,which thanks to Skype and FaceTime we can all enjoy, as well as big screen televisions in homes. We also now do have wearable technology and hands-free video game systems.

Speaking about the film’s enduring appeal during a 30th anniversary panel at London Comic-Con in July, star Michael J Fox said, “Ironically, for a time-travelling movie, there was a timelessness about it. Kids now like it. Though my kids haven’t watched it. Or, if they have, they haven’t told me.”

Reflecting on the dynamic between the film’s two lead characters, Marty and Doc, Fox said. “What (Christopher) does in the movie that people don't really appreciate is that he lays all the exposition… All the stuff that's brilliant is also serving the story. With Marty, it's the same thing. It's his curiosity.”

More: So, Is 2015 Anything Like What 'Back To The Future' Predicted?

“He's just a cipher for the audience to take in what's happening and see their feelings reflected back…Marty was just everyman. Marty was every kid. He was just supposed to represent everyone's reaction to what was happening.”

The actor also spoke about how the pairing of Doc and Marty was instrumental to the franchise’s success. “When you’re 17, a lot of things don’t seem possible," Fox said. "Doc shows Marty what is possible and he accepts him as he is, and invites him to share the adventure.”