Going Back To The Future shows how good part 3 is

Rating: 9/10 (15 October 2010)

Like many others, BTTF3 didn't have the immediate impact for me which its two predecessors had, leading to a sense of disappointment. Hindsight gives me some idea why this may be so.
I think it is because the three time eras visited in the first movies are all within my frame of reference, but the Wild West is not. Once I put that to one side, I see what a worthy conclusion to the trilogy we have.
The plotting is absolutely fantastic - there are so many interlocking elements here, pieced together with the precision of a piece of fine machinery. Choosing such a completely different time era - and one which has been immortalised in hundreds of westerns - provides a whole new playground for gags, visual reference, plot anchors and so on. And the decision to add a love interest for Doc to the story offers a welcome change to Marty's familial complications, as well as giving the movie (and the series) a much needed heart - and Mary Steenburgen fits into the established cast as if she had been there from the start.
And the finale, which draws together elements from all three films and provides several payoffs within the space of under five minutes, is perfect. Simply perfect.