I have read them (traditional order) to my children. It was night. Portions every night. (Since I have a number of children, each one was at a different book...).
Then, we discussed. (By the way, I read with a small flashlight, in the dark. I just had sufficent light to read outloud. I was usually on the floor... but sometimes did share their little beds ( with one leg holding me up o).
Lewis is as a Genius as Tolken is. Please remember that Aslan, according to C.S. Lewis... is CHRIST.

http://disney.go.com/disneypictures/narnia/
I always loved these books and read them to my children. The next movie (Prince Caspian) is expected in a few months.
Fantastic!!!