Saw it last night. Great fun - but it is kid's film lacking as it is in anything so much as resembling character and development, much less story. The acting, as ever, was atrocious - apart from Tom Felton, always under used as Draco Malfoy. The smug sense of Messianic Righteousness ruins it; the only point it became in anyway real for me was Snape's back story which would have made a far more interesting film. But great fun as I say.

Plot spoiler: it was the hat's fault all along!