Zemeckis's 'Back To The Future' trilogy has been a childhood favourite for many people in the world for a long time. From beginning to end the movie producers strived on excellence within the script, story, and budget. They did well.
The 80's saw a lot of excellent original fun 'young' films but none like 'Back To The Future. What really made this film immensely enjoyable then, and a classic today, is that it really reflected what it was like being a teen in the 80s, not only that but the 60's as well. The movie was well written, well executed, well acted and they cut straight to the point.
Back to the Future is sheer fun, even today. There's an incredible energy about it but it still manages to stay an 'innocent' film. The music is very effective. It's slick and follows a steady pace. The special effects are decent. Though people might pick on the plausibility of the time travelling, I think this is really a very minor flaw because it is overall a well written movie and the point was to entertain. Yet, this is not to say that it's brainless entertainment. I think it cleverly brings forth some interesting themes and I liked how they funnily used some ideas of Oedipus Rex's story.
The acting is superb overall. Christopher Lloyd as the over-the-top mad scientist is a laugh riot. Michael J. Fox totally owns Marty McFly with his natural charisma, raw energy and brilliant dialogue delivery. Lea Thompson is cute and vivacious and Crispin Glover does a good job. Probably the most excellent character would have to be Biff(played by Thomas F. Wilson) being the ultimate bully.
Back To The Future' is one of the most enjoyable time-travelling classics. The movie is very old and it still hasn't gotten out of style. To this day people wish that movies were made in like this but they are not because of the intention to push the envelop.