I thought it was excellent. They kept it very close to the book.
They did add in alot of things I thought they would take out, (Aragog's Funeral, Snape's many conversations with Malfoy, Lavender Brown's entire act, the poison mead, the ENTIRE cove scene) and all that left me very happy.
The directing was also phenomenal, and the actors were amazing (Most notably Lavender's actor, Luna's actor, Slughorn, Malfoy, and of course, Snape (I ♥ you Alan Rickman!)
(I also, er..found Lavender extremely attractive..as well as Luna..again...but I digress
)
THAT SAID;
They also left a great many plot-points out, which did leave me wanting more but I feel we should address them:
-The Gaunt Family - They were completely cut out, as well as Tom Riddle Sr. The only mention of them coming from Dumbledore when he incorrectly stated that the ring came from Voldemort's mother, when it actually belonged to Marvolo Gaunt his entire life, and then being taken by Morfin..and then taken by Voldemort...
if I recall correctly..it has been a while since i read the books, after all.
- The Minister's Meeting - When Fudge meets with the muggle prime minister of britain, it sets up the plot, to an understandable level, pointing out all the terrible happenings, and the general situation. The beginning of the movie is a pretty good visual representation of this, but I don't think it captured it as well as the book's beginning did. It also, introduced the new minister of magic, which brings me to my next point.
- Rufus Scrimgeour - He was completely absent. There was no mention at all of him, Fudge, or any ministry personnel besides..well..Mr. Weasley. I was really disappointed..I wanted to see someone play his part... and he definitely could have come in when they went back to the burrow for Christmas..
- The Other Horcruxes - At the end of HBP (Book) Harry, Hermione and Ron have a total of 5 horcruxes worked out. The movie covers 3, the diary, the ring, and the locket. One of Harry's pensive visits revealed that Voldemort had a knack for collecting Hogwarts heirlooms..most notably, Hufflepuff's cup. And they had already guessed that Nagini was one. But, at least they set up the idea that there are 7, so they can't just leave any out or invent others, and have to bring in the cup and the idea that Nagini must be one in DH part 1 or 2 when they come out.
- Dumbledore's Funeral - As heart-warming as the scene where the entire school raises their wands to erase the dark mark over Hogwarts was, (and believed me, I almost cried man-tears) I really feel they should have done the funeral scene, to at least completely capture the sadness we all felt when Dumbledore was blasted off that tower when we read it, and it's after-effects (I always felt bad for Hagrid).
Anyway, that's how I felt about the movie. Yeah..I'm an HP geek..but...I don't care.