Part III, the wild west entry, is probably the most fun. The original has just such a fantastic premise that creates a sense of urgency about seeing it out till the end, but there is something uncomfortable about your mother having a crush on you that leaves a bad taste in the mouth during Part I. The premise of Part III is this: in 1955, Doc learns that he will eventually travel back to 1885 to live out his days as a blacksmith, but then Copernicus, Doc's 1955 dog, stumbles upon a gravestone that tells Doc and Marty that Doc will be shot to death by Buford Tannen over a matter of 80 dollars. Naturally, Marty says he will travel back to 1885 and get Doc and bring him back to the future with him (though it couldn't be 1955, because there's already one Doc there).
There are time-jumping laws that are not obeyed by the scriptwriters here, and much worse than in the second film, but this one's so well concentrated and so much the better movie that they hardly matter. It has a climax involving a train that rivals the clocktower climax of the first one. A fantastic scene.
Thomas F Wilson, the perennial bad guy of these movies, who started off as Biff Tannen in the original, played Griff Tannen in the second one, throws himself into a Yosemite Sam part as Buford 'Mad Dog' Tannen in the third. Mary Steenbergen, in one of her few leading roles, is a nice addition to the cast. She fits right into the wild west world, as the dainty schoolteacher who plays "his beloved Clara" to the Doc.
Like the others, its larger-than-life tone, with the over-blown time-travel dialogue and melodramatic highs and lows, render it into a kind of live-action cartoon. Kids will enjoy Part III the most, but it is so good-natured that adults should have fun with it too. Out of the three, this is the one that you'll be able to put on any time and feel good. Great, harmless fun.
