So I went to see Narnia today, in a kid-free cinema. It's a good movie, better than I was expecting. Well-made, well-acted and in no way a shameless Lord of the Rings clone. It has Nazi bombers over London for one thing. In summary:
Pros
Visually strong
The kids can act
Not "Americanised", although there are some oddly chosen accents
Entertaining
Cons
Basically a children's movie at the end of the day