While I'm randomly critisising, why didn't they have to go past a troll to get the Philosopher's Stone? It would have taken about fiveteen seconds extra, and we could have had the 'I've always had an affinity with trolls' line which was about half the point of one of the previous scenes.
And while we're at it, the mirror of Esired was too small and the Hogwarts should have had stone staircases rather than those pathetic wooden ones. But those are just because I visualised it differently.
All in all, a good film. I suspect I'll enjoy LOTR better, though.