Lion, Witch & The Wardrobe was DAMN poor! I don't recall the book, it may or may not have been a good adaptation - but I was very underwhelmed. The score was nice, and I did enjoy the fact that the grown-up version of Susan was played by "Big Suze" from Peep Show, but that was about it!
Narnia has more potential, though. Give it to a better director! Like Tones!