The thing that tickled me most was the special guest appearance by Willem Dafoe. I remember at the beginning of that scene thinking "man its too bad we can't see more flashbacks with Harry remembering his dad" near the end scene with Harry...and then we hear the laughter...and then, in the mirror...
I totally flipped out over that. Honestly, when is the last time you saw a major Hollywood actor appear in a movie for less than five minutes, with three lines? It was incredible! It shows a level of commitment to the story, rather than trying to save a few bucks by not having to pay an actor a lot for just a small scene. Long live Sam Raimi!
Paradoxically, I'm not too hyped over how obvious it is that Harry is going to be the villain in the next movie as the new Green Goblin. I mean, I love the emotional drama in the Spider-Man movies, I do, but I also like the action, and I don't want to have the third movie have the Goblin redux as the bad guy. While it's great for telling a story, I want to see a new villain on the screen.
Sadly, this probably won't happen. Sam Raimi said in some interview I read somewhere that he considered using multiple villains in this movie, and decided not to (rightly so), so that'll probably hold true with Spider-Man 3 also.
Likewise, I want there to be six movies, I do, but that's probably not going to happen. Kirsten Dunst has, IIRC, said publically that after number three, she's out of there. Likewise, according to a recent Newsweek, Toby Maguire came very, very close to not being in Spider-Man 2, due to the fact that he had to personally perform a lot of stunts in it, and he was suffering from some rather severe back problems. It seems likely that if they try to do six movies, the last three might see some hefty cast changes, and that automatically lessens a film when its in regards to the same characters.
I'm hopeful for the future of the Spidey movie franchise, I am. Sam Raimi has given us nothing but top-notch work so far, but with the third movie seeming to be Spidey vs. a Goblin that's a close friend...again, and movies 4-6 in doubt...well...I'm worried.