I read the book later on, but my girlfriend got me into the movies first. It was a good bit better than the 2nd film, since the plot matures.
It's a shame my girlfriend Daisy spoiled a good bit of the plot. She was like "Hey guess what? Sirius Black is good, and Ron's rat is really a person" before the movie started. Good going there, well I got her back later when I refused to tell her what happens when we were watching movies I've already saw but she hadn't. The girl can't stand not knowing what happens next.
Despite looking more detailed in later movies, the Dementors were some scary stuff. You'd think they would know better than to send soul-destroying monsters on a train full of children to find one wanted man who probably wasn't there.
I really loved Remus Lupin in the film. So suave and slick, and such a great mentor to Harry.
You'd think people with magic wands could handle his werewolf form. Don't worry let the dog handle it.
This was also the film where Michael Gambon replaced the late Richard Harris as Albus Dumbledore. I usually hate change, but I think Gambon stole the role and made it his own. Harris was nothing compared to him.
But despite some confusing time-tuner stuff, I loved it. The book is way better though. Especially the confrontation with Peter Pettigrew.