Folks, Harry is not a Horcrux.
Points of evidence:
* The only reason Voldemort bothered to kill Harry was because of Trelawney's prophesy. Thus, Harry would not have been on Voldemort's list of items with which to make seven Horcruces. If he wanted to make seven Horcruces, he would have already chosen seven other items.
* You're splitting your soul into seven parts. Destroying one of those seven parts puts you one-seventh closer to mortal again. You don't destroy one of those parts. Voldemort intended to kill Harry Potter, something fairly clear from his using Avada Kedavra, as spell which thitherto had a 100% fatality rate if the victim could not move out of the way or cast a blocking spell. Killing off one-seventh of your soul strikes me as something The Whiny Witch wrote in Seven Stupid Things Dark Lords Do to Mess Up Their Lives.
* Since Voldemort gave the option of life to Lily Potter, he did not intend to use her death in making the Horcrux, and the protective magic she cast on Harry probably would have foiled that anyways.
* From the memories in the Pensieve, it does not look like making a Horcrux is a spur-of-the-moment deed. Bringing back Voldemort's body took plenty of planning and work on the part of Voldemort and Wormtail. Voldemort busted into Godric's Hollow and fought off two wizards -- one to whom Voldemort gave the option of living. He did not have the luxury of time.
On the subject of death: the structure of the Monomyth lends itself to trips into the world of the dead. She has already given us the technology with which one can meet the dead -- the Veil. At some point, there has to be some way for something to come out of the Veil, as voices do, as otherwise, it's just a big weapon. It could be as simple as Harry sliding Sirius's mirror under the Veil and using that to talk to Sirius and others, or more involved, like Harry figuring out (or, more likely, Hermione figuring out and telling Harry) how to use the Veil to be able to go through it both ways. I think of Aeneas and Orpheus entering the realms of the dead. Let me put it this way -- Sirius died in the way he died for a reason, which is to show everyone how the Veil works. We have to know how the Veil works for it to be something other than a deus ex machina in book Seven. She has done this before, namely with the Polyjuice Potion episode in Chamber of Secrets. You can omit that without changing the plot of that book too much, but then you have the ending of Goblet of Fire needing a thitherto unknown potion that happens to change the look of the drinker to be someone else. It would have been harder to take. Knowing this is one of Rowling's strengths as a writer. Indeed, she does this better than almost anyone else.
The other issue is that at some point, Voldemort will cast the Killing Curse again on Harry Potter and nothing will stop it. He has done this three times, all three times stopped -- first time by Lily Potter's sacrifice and protective magic, the second by Priori Incantum and the third by Dumbledore blocking the flash. What will happen to Harry is anyone's guess. Part of me thinks that he does die, but somehow comes back through the Veil, maybe only to finish his mission (Rowling believes that dead is dead), or using the excuse from Heaven Can Wait that he was not supposed to have died then.
FWIW, my SWAG (semi-wild-assed guess) is that while Harry does destroy the Horcruces, someone else -- likely Neville -- delivers the killing blow to Voldemort. I have nothing to back up this, other than that I am a Neville Longbottom fan.
Shadow, are you sure it is not you liking of Draco that makes you hope he will be redeemed? Any mayhap your dislike of the Ginny/Harry thing is from your hope for a different type of Harry slash Draco than that book gave you? 
