He put in random scenes like the Death Eaters starting shit at the Weasley home for absolutely no reason and Harry/Hermione dancing. He butchered scenes that were great in the book (EVERYTHING in the Department of Mysteries, events surrounding Dumbledore's death, Ron/Hermione kiss, "NOT MY DAUGHTER YOU BITCH!", Voldemort's death etc.)
The books are just okay themselves but the movies, especially the later ones, could have been a LOT better.
OMG, this entire scene pissed me off.
Agreed with the post. I feel like near the end of the series, it started to prioritize adding stuff in to make it more entertaining rather than keeping true to the books.