I was exhausted when I came out-- the whole audience stood and applauded at the end, and there were several places where people whistled or cried out, they were so into things. I can't wait for this one to come out on DVD. Prisoner of Azkaban is my favorite for characterization, I think, but Goblet of Fire was just a lot of fun.
Go see it as soon as you can!
Ps. I was a little disappointed that we didn't see Narcissa at the Cup, but... *shrugs* [shameless plug] I did write a new Narcissa/Lily piece earlier this week. It's right here.