I haven't seen either of the Narnia movies out so far.
Wait, I take that back... I've seen some of The Lion, the Witch, and the Wardrobe; I don't have any real objection to watching them, but they didn't have enough machine guns and dead Nazis to make me want to see them in the theatre, and I don't want to see them badly enough to actually go buy the DVD. (I don't rent DVDs; when used ones are available all over the place for $5-$9, I just buy the stuff I want to see...)
However, the one about to be released, The Voyage of the Dawn Treader, is my favorite book of the series, and the only one I kept as an adult. I kinda want to see this movie... but I'm picking up the vibe from the commercials that they've pretty thoroughly borked the original story in favor of pumping up the action figure sales. If there are Ewoks fighting Wookies on the forest moon of Endor, I'm gonna be righteously peeved.