Just got back from the 8.45 screening (I had planned to go to the 8.00 but it was sold out.) I thought it was pretty good, not as good and comprehensive as the book (which is, tbh, my least favourite of the series, yet still good. ), but it has its moments, the usual smart-arse remarks from Ron... and Hermione!

(SPOILER)I did find the ending a tad cheesy though. As follows:
Harry: We've got something Voldemort hasn't... a huge wedge of cheese...
Voldemort: AARRRGGGGH! CHEESE! MY ONE WEAKNESS!
*film ends*

Also, Snape is still totally my favourite character...