One of the best (includes spoilers!)

Rating: 10/10 (14 February 2004)

This is one of those movies that shouldn't get a high rating, but is one of my favorites anyway. Generally, highly popular, sci-fi/adventure, movies are not thought of as great, but this is definitely an exception. Why is that? It's the script, IMO. I have yet to see such a brilliant and clever script since. Examples are: Marty's mom berating the behavior she herself was guilty of as a teenager; Marty creating a makeshift skateboard, which he is shown to be very adept at riding in the present, out of an old time scooter in 1955; George Mcfly punching out Biff turns George into a confident, successful writer and Biff into a stumbling oaf; and, of course, Marty inventing rock n roll. Every story writer/screenwriter should really study this script to see how the great ones are constructed.
Another reason this movie is so good is that the casting is as good as it can be. I really can't imagine any other actors in those roles.
Beyond that, the movie is just so much fun to watch - it's one of those movies I've seen a hundred times and still watch if it comes on TV.