Narnia came out yesterday, and I haven't seen it (then again, I've never read the book either - now I can't decide if I should see the movie first or read the book first). But my son saw the movie last night. He says it's "the sweetest movie" he's ever seen. Here's how he describes the analogies in the story. There's certainly opportunity for talking about Christ with others through this film.
P.S. I am thankful to God for what he has done and is doing in each of my children's lives to shape their hearts to love Christ. I like Mike's description of worship: "what is worship? to me, it's taking thanks one step further and giving God glory for that."