Two great actors make up for a average script in this great little western remake. Bale is an awesome actor, and so is Crowe. Without them, it would not have been half the film.
Bale has a sort of 'minimalist acting'. the kind Clint Eastwood employs. Dark and moody. Someone should take Mel Gibson to one side and tell him where he went wrong after Mad Max and Lethal Weapon 1. Put down the shovel Mel. Less is better. See the 'Machinist' for proof of this.
Christian Bale is, in my opinion, one of Britains best ever contributions to Hollywood. And he show his weight on this film.
Yuma is totally watchable, but like I mentioned above, it is let down a little by the ending. I can see what they were trying to do, kind of breaking with the whole 'normal western ending', but it doesn't add up in human behaviour.
Still, one of the best westerns to be made in recent times.