The best parts are when Moody pwns that Death Eater, when Malfoy has his hands up and he has that funny look on his face right before Sirius zaps him and of course the duel between Dumbledore and Voldemort, which rocks to no end. The only complain that I have about it is they didn't put the part in when Voldemort sends a killing curse at Dumbledore and Fawkes comes in and swallows it. I was so looking foward to it...
Disclaimer: I do not own Harry Potter or any related characters. Harry Potter belongs to J. K. Rowling and the movie clips belong to Warner Brothers.