Michael J. Fox and Christopher Lloyd go on their third journey through time, this one winding up in the wild west, where Lloyd falls in love with schoolteacher Mary Steenburgen. Once again, Robert Zemeckis directed from a script he did with Bob Gale, and again Lea Thompson and Thomas F. Wilson costar. This is a good deal more likable than part two because the product plugs have been held back, and Zemeckis is clearly having fun alluding to his favorite westerns; there’s also a certain sweetness and charm in the Lloyd-Steenburgen romance, although, like most elements in this trilogy, these qualities tend to be more conceptual and programmed than felt. (JR)