Just saw the movie this morning, and I was impressed. Way better than most book-to-movie adaptations. There were parts they changed that I didn't like, and there were parts they changed that I did like, but overall, it worked, other than a few small things:
1) Darcy's leather duster seems out of place for the time period (no one else has a leather jacket like that)
2) The mid-credit scene
3) Why oh why did a character who dies in the book not die in the movie?