Having read the books before seeing the movies, I was sooo emotionally connected to Dumbledore's funeral and Fred's death scene (having cried like a fool while reading both parts) and was disappointed to see both scenes were left out. In some cases, I think they may have focused a bit too much on the forward movement of the movies and left out crucial plot points in favor of that. It kind of kills those 'aha' moments that you experience while reading the books...