Just seen it. Here's my 'review', just cos I feel like writing about it. Beware possibly SPOILERS. You have been warned.
Good things:
- Opening scene, at the train station. Made me sniffle, which is saying something cos I hate anything historical, especially WWII sob stories.
- They stuck very closely to the plot of the book, which gets a HUGE thumbs up from me.

Admittedly I haven't read the book for ages, so I may have missed a couple of changes, but overall I was very pleased with this, which again is saying something because I am always very suspicious and picky about any movies based on books (don't get me started on Harry Potter!)
- Susan's green dress - very elfish.

Like something out of LOTR, very earth-maiden-spirit-goddessey, love it! I NEED that dress!
- The coronation outfits and crowns: just gorgeous!

Plus, Susan with a decent hairstyle and wearing that figure-hugging dress = hubba hubba!

(and as a teenager myself, I can say such things without being a perv

)
- Older Susan and Lucy (at the end) also = hubba hubba!
- Oh and Peter was HOT.
- And now there is oh so much possibility for the ridiculous shipping wars... how about Lucy/Mr Tumnus, Susan/Aslan? Or worse yet, Susan/Peter?

*grabs a bag of popcorn and sits back to watch the mayhem*
Bad things:
- Edmund = annoying whiny git. Although the bit at the end when Peter hugs him made me well up, but I'm blaming it on hormones.
- The CGI was pants. Well ok it wasn't bad, but it's nearly 2006 now, not 1999, I expected better. Aslan wasn't consistent - sometimes he was almost a real lion and sometimes they gave him human expressions so he looked cartoonish - and the wolves were terrible, it was way too easy to tell when they were CGI and when they were real. The beavers were a little better but still didn't quite have the realism I expected.
- Some of the other special effects weren't too good either, could definitely tell when they were standing against a screen as opposed to real scenery.
- Lucy looked way too young. Isn't she supposed to be about 8?
- How did Lucy get curly hair at the end? Surely they don't have curling tongs in Narnia?
- Wanted a bit more screentime for the older versions of them... except for older Peter, who looked AWFUL with that beard.
- Mr Tumnus' knees kept changing - sometimes they bent like a goat, sometimes they bent like a human.
- Not a mistake technically, but I always imagined the stone table to be round, so the square one threw me a bit. Shall have to check whether it was specified in the book.
And this could be good or bad, so I'll put it on its own:
The clothes and hairstyles were very old fasioned and realistic, I hate action stories were the heroes always have perfect hair; this was much more believable, but up until the last 15 minutes I was cringing from the sheer awfullness of it all. So that was good for most people, but for people such as myself who have a strange obsession with hair, it made the entire movie almost unwatchable.