I don't know if anyone has posted this, but I noticed a lack of a Wormtail death scene, am I wrong?
According to a Mugglenet podcast I heard some time ago, they never filmed anything in DH part 2 for Wormtail. They didn't film a death scene for him in part 1, either. It was one of the details that really bothered me - I mean, when I originally saw DH part 1, I assumed that they were saving his death for part 2, and then to have nothing at all...I'm glad I heard it on the podcast and didn't go in expecting it.
RoJoHen, re: The Marauders: Aside from the map, they're never mentioned in the movies, so if you didn't read the books, you wouldn't know who they were. However, the omission of an explanation about the origins of the Marauders' Map (as well as how Lupin knew what it was) really pissed a lot of book fans off. (Personally, if I was going to name one thing from the PoA movie that bugged me, it was the shrunken head/extended bus sequence.)
I'd have to go see it again to decide, but this is definitely in my top half of the movies, and above part 1. The 5th movie remains my favorite (while book 5 is my second-favorite book after Prisoner of Azkaban. Least favorite for both book and movie is Chamber of Secrets.)
For Deathly Hallows part 2, I really enjoyed most of it; I thought the ending of the book was unnecessarily convoluted and that Steve Kloves did the best with the material that he could. I wish Neville had just taken the snake's head off after his speech, and the Molly/Bellatrix fight worked better on-page than on-screen, but Harry snapping the elder wand didn't bother me (though I wish he'd have fixed his own wand first.)
One thing that bothered me a bit that no one else has mentioned: McGonagall's ordering that all the Slytherins be summarily confined to the dungeons for the duration of the battle. So all 100 Slytherins, from ages 11-18, are assumed to be evil? (Granted, the books didn't do a great job with this either, but I've always found it hard to believe that if everyone in the house was so evil, they would've abolished it after the war.)
Finally, a question on something I missed in-movie: How did Snape know where the Trio was in order to plant the Sword of Gryffindor in DH part 1? No Phineas Nigellus in the movie. Or, in the movie, are we supposed to assume that the sword presented itself (at the bottom of the lake?!)