In short, this movie is great — a must see. I think it truly deserves the 7+ rating (or even more) it has on IMDB. It's based on a fantasy world by CS Lewis. The Lion, the Witch and the Wardrobe is the first installment of 7 tales that constitute the Narnia universe. Originally, the tales are targetted towards children though – being an adult – I've found them really good.
I won't talk about the story or the plot to not spoil anything. Instead, I'll talk about everything except that.
The acting is not bad really, esp. if it comes from children such as Lucy and Edmund. May be Lucy couldn't control the way she shows her emotions. She felt a bit reluctant especially in the happy/sad situations.
At first, one may feel the way the story is told is kind of rushed, but after checking out the original book, I found it's the same way it goes there too. The book was meant for little children, so it was straight-off and clear.
The music was good, but not special. Do not expect something like The Return of the King's. Mr Tumnus's playing on his fluke was nice nevertheless. However, the sound effects were the best I've heard in a long time. The way Aslan the lion roared, and the wolves talked was unbelievably true. Of course, this is coupled with the mastery of the visual effects too.
The visual effects were one of a kind. The creatures like Aslan, the beavers, the wolves, and some fantasy birds were full of life. Aslan's military assistant (pictured) who had a half-man half-horse body was a visual masterpiece. The way 'it' ran and fought was breath-taking.
The characters which are primarily the four brothers, Mr Tumnus the Faun, the White Witch, the beavers, and Aslan had depth in them though they didn't appear for much long time on screen, for as I said before, the movie had many fast scenes, one after the other. Aslan looked truly as a king, his voice, and his looks. However, he is critcized for being much more smaller than what he is supposed to be (in the books).
Lastly but not least, Andrew Adamson did a great job at coming out with such great direction and overall the feel of the movie, making it the 3rd most grossing movie in its first week in history.
The Chronicles of Narnia: Prince Caspian is coming next year.