Joe Thorn has a good, concise post about how Christians should watch and engage movies. Thorn says:

Look, some movies are head candy that say nothing. Some say the wrong thing, and some give us amazing glimpses of truth, beauty, love, even the imago dei in fallen man. I am not saying all movies are good, or that any movie is okay to watch. What I am saying is that we, as Christians, can do better when engaging the the arts. We can be fair to the films and faithful to God, and in doing so we can engage our culture and community where they are with the Gospel we celebrate.

Check out the post in its entirety here.