Missing story line?

Rating: Null/10 (26 February 2006)

It is very difficult to cram a 400+ page book into a two hour movie. I have read some (bad)reviews of the movie by people who have obviously not read the book or are familiar with the characters. I would be hard pressed to understand the movie had I not read the books and seen the previous films.
Herein lies my criticism, the film is a sequence of brilliantly crafted scenes with barely a thread of storyline holding them together!
There is even a scene 'borrowed' from Order of the Phoenix that had little to do with anything. So much was left out of GOF that was relevant no, essential but why do that?
This film could not be enjoyed without a good knowledge of the books and previous films.