It's the movie of the year so of course I'm obliged to write about it. Heck, I've even read the book (in fact, all four and waiting for the next three). No spoilers here (Harry saves the world from Ultimate Evil); just some comments on the film.
Daniel Radcliffe wasn't a horrible Harry. Neither was he a great Harry. He was just there. Rupert Grint (Ron Weasley) and Emma Watson (Hermione Granger and that's “her‧my‧oh‧knee” not “her‧me‧own”) were much better. I'm not sure if it's because of the direction by Chris “Home Alone” Columbus; it's a very difficult role to pull off or he just isn't all that great. I don't know but I felt he was a bit wooden. Everybody else was wonderful (especially Alan Rickman as Severus Snape).
The special effects. Very uneven. They did a wonder job with Hagrid—I'm sure the technology developed for use in The Lord of the Rings was used here to make Robbie Coltrane into a nine foot tall giant (instead of a three foot Hobbit). Very effective. But for me, most of the computer generated effects distracted me. They looked like computer generated effects. The dinosaurs from Jurassic Park were much better done and that was eight years ago! The Quidditch match would have looked great for Final Fantasy: The Spirits Within but here they were out of place.
Overall the movie is worth seeing (I wouldn't mind seeing it again) but they could have done a better job overall.