I really could go on and on, but nobody would read it... suffice it to say, there were no LDS people involved in coming up with the idea to make this movie (though they did consult the church through Elder Widstoe during script drafts and filming), but I found it to be a very researched, very respectful film. It did take some artistic license for dramatic purposes (the biggest being Brigham Young's struggle to believe that he himself had been called of God as the next prophet), but I am still amazed, days after having viewed it, that it was at no time cynical of the mormon pioneers or leaders (even the fictionalized leader who is an appeaser and tries to claim leadership of the church himself).
And the actor who plays Brigham Young has an uncanny resemblance to pictures. And an LDS man who was consulted had been a young boy when Young was a very old man said that the actor not only physically resembled Young, but even had some of his mannerisms down.
Anyway, I rented it from the library and I would recommend it to anyone interested in seeing a respectful non-mormon film about a revered mormon prophet.