I really, really liked it :-) It was so funny and I can't wait to see it again. I loved the scenes when Ron was "in love" with Romilda and the one where Harry had taken Felix Felicis. So damn funny!!! And Rupert looked gorgious (as usual)! His Quidditch performance was great and the whole triangle between Ron, Lavender and Hermione... Wonderful :-)
And I think that Tom Felton did a phantastic job!!! Great performance. I felt really sorry for Draco (and he looked great in these black clothes!)
All in all it's definitively the best film - which means a lot as I already loved the other ones.