What is really interesting is the role reversal of Marty and Doc in the 3rd film. In the first film Marty doesn't really pay any attention to the whole space/time continuum while Doc is constantly telling him he mustn't do anything that could alter the future but after the events of the 2nd film Marty learns his lesson and spends much of the 3rd film telling Doc he mustn't do things that will change the future. And of course like Marty in the first film he doesn't listen and falls in love with the always brilliant Mary Steenbergen. It works brilliantly and something I missed when I first saw the film as a teenager.
What is you fave film about role reversal and why? Is it Hanks in Big? Is it Indy and his son in Crystal Skull as a flip on Indy and his dad in Last Crusade? Is it Hoffman in Tootsie?
I really wish I had a hover-board...oh and a time travelling DeLorean.
Now why don't you make like a tree...