I didn't get swept up in Pottermania is real time. I read the books a couple years ago and loved them. Then after a time I decided to buy the Blu-Ray set. I had seen Goblet of Fire on a date, but it was a midnight showing, and my date was more interested in the film than me, so I dozed off*. The only implication here is that Michael Gambon was my first Dumbledore.
So I recently watched through all the movies, without the benefit, or detriment, of time between each film as if I watched them upon their release in the theater. These are not the greatest films I've ever seen, but they are damn fun and enjoyable, and quite the overall achievement. I am sure people on the net have dissected all the differences and changes they made. We can discuss those here, but I won't get too wrapped up in them, as it takes a little more thought than I want to commit to that activity. I think by and large each film was made the right way, and while most changes/omissions/additions made for time, budget, or creative purposes seem reasonable, only one seemed to bother me in real time and continues to weigh on me.
The casting is genius. The whole story arc hinges on Potter himself, and Daniel Radcliffe is nothing short of astonishing. As do everyone else. I knew who all the major actors were since I read the books after the movies came out, so I already had them in my mind when I was reading, again for better or worse. But everyone delivered admirably.
I am starting to ramble.... discuss the Harry Potter film series here.
* We didn't go out again.