It's officially coming out in the UK on May 11th and my copy arrived this morning a couple of days earlier than expected, so I've just watched it with my kids. I can't do the review the full justice which the official HTF will give it, and I'm not even going to try. However, in brief: (a) when I saw the movie a mere day after its official release, the film I saw was scratched and dirty and the sound in places was not very clear. Also, there were points where the lighting balance just didn't seem right - e.g. the scene just after Christmas where Harry releases Hedwig in the snowy courtyard appeared over-bright. I thought this was all the fault of the cinema projectionist. However, the transfer, although visually clean, appears over-exposed at just the same points. Again, to my ears at times it seems to have a slightly muddled sound (perhaps it will be better in 5.1, I was listening to it through my (good)stereo, but having said that, I haven't had problems with other movies). In short, good, but not demonstration quality IMHO. (b) the extras are pretty much aimed at kids, and certainly my two(aged 6 and 8) love them. There's a tour of Hagrid's hut, Gryffindor common room, etc, and certain sections (e.g. Diagon Alley) can only be accessed by solving (simple) puzzles. I imagine that those sad souls who felt the extras should be adult-orientated will hate these. (c) curiously, I found myself enjoying the movie more at home than at the cinema. The quidditch match made more visual sense and what I thought was a rather disjointed plot the first time around was mutch better on a second viewing. I'd finish by saying that this is a must-have for anyone with Potter-mad kids, but that is self-evident.