Magnus,
Good question. I saw the first two (out of 4, I think?) Harry Potter films and thought they were imaginative and cute enough, but both times I felt VERY sleepy by the end. In fact, during one of the films, I think I actually did stop the DVD, take a 30 minute nap, woke up refreshed and finished it.
So the movies had enough "general" quality to be enjoyable to me, but in the end I'm just not much of a fan of magic and wizardry and shotty character development (Where was Harry's inner conflict?). Just not my type of film.
(Just for reference, my type of films: The Machinist, The Woodsman, Me and You and Everyone We Know, Memento, American Beauty, Fargo)