This movie wasn't what I was expecting, in both good and bad ways. With James Franco, Sienna Miller, and David Carradine, this isn't an all-star cast, but it's also a pretty decent one. The film has at times a corny mid-Western, genuine Americana flavor (cowboy showmen, small-town sheriffs, etc.), which makes its low-budget appearance tolerable. You can't take the film too seriously, which means you can actually enjoy it for what it's worth.
I thought the plot was emotional and actually made me stop to think how much I should appreciate those I love. Near the beginning of the film, Franco and Miller's characters get married, but the marriage seems destined to be an unhappy one. However, soon afterward, they get into an accident and Miller (Camille) dies. Well, kind of. Her ghost lingers on because she was not prepared to die. The rest of the film is about the couple finally learning to appreciate each other and find the happiness that had eluded them for so long. In a real sense, the "ghost" plot device is a metaphor for something like a terminal disease in real life, when we know a loved one will die soon. Camille touchingly shows us to live that small window of life to the fullest.
Now, the bad. Like many other films involving supernatural plot twists and ghosts (I'm thinking The Sixth Sense), Camille sometimes lacks internal consistency. For example, soon after the dead Camille breaks a finger merely from pulling her hand away from her husband's, she manages to slap him in the face. This certainly doesn't help sell an already implausible concept - namely that Camille is dead, but can interact with everybody normally. If you can forgive such problems and make the intellectual leap into believing the story for the sake of watching the movie, it's not too bad.