Time Rider?

[Chewfunka]

You guys should check this one out. Fred Ward rides a motorcycle back in to the wild west and does not realize he has for most of the movie. It also has quite possibly the best ending I've ever seen.

[The Burgomaster]

I hated this movie.  But Mike Nesmith from The Monkees wrote the screenplay and the music, so I guess it's an interesting film to watch for those reasons . . .