OMG, Harry is SO definitely a horcrux. I am just about to finish book 2 of Harry Potter (on my way to re-reading all 6 before the 7th comes out), and talking with Dumbledore after defeating Tom Riddle, this exchange takes place:
Dumbledore: "Unless I'm much mistaken, [Voldemort] transferred some ofhis own powers to you the night he gave you that scar. Not something he intended to do, I'm sure..."
Harry: "Voldemort put a bit of himself in me?
Dumbledore: "It certainly seems so."
So that's when Voldemort made Harry a horcrux. I wonder if the diary of Tom Riddle was actually a horcrux as well, and Harry destroyed it in book 2? Anyway, just needed to share that with you all. Dumbledore does say that he's sure Voldemort didn't mean to do it, but I think it's just because he hasn't figured it all out yet.
Oh, and also, at the beginning of book 1 when Snape is introducing Potions during their first lesson, he says he can show them how to "brew fame, bottle glory, and even put a stopper in death," so that might be a possibility for Dumbledore not being really dead...but I still think he IS really dead, because don't we see him in a picture frame in the headmaster's office right at the end of the book? I don't remember for sure, which is why I'm re-reading, but I'm pretty sure we do, so I'm fairly convinced that he's dead.
And one final thing: I've always been a bit skeptical that JKR had everything worked out ahead of time, but in re-reading after finally knowing everything thru book 6, I think I'm convinced - I'm noticing lots of things that she's setting up for future books, leaving little clues and allusions, and it's pretty cool...so I do think she must have had a pretty complete vision of the story right from the beginning. Amazing. I can't believe it will all be over this summer. I think I'm going to cry...
What do you think??