I've seen it. It was very close to being the best film in the series, but it left you wanting more at the end (I read the books a few years ago). It's still very much worth seeing.
I haven't seen a single one to be honest nor read any of the books. My friend goes name a witch and I say Sabrina the teenage witch.
I am not a Harry Potter's fan, so not yet see. Anyway, I prefer the novel than. but I think I will see it eventually.
I've seen it, but didn't like it that much. It's not so exciting like the previous harry potter movies T__T