Ok, I just want to go on the record before the final book comes out and state that I fully believe the "Harry is a Horcrux" theory. It just makes sense to me. There seems to be a lot of evidence for it and I think that a lot of assumptions made by characters in the book can be taken as misdirection. Afterall, Dumbledore himself said that being as smart as he is, his accidents tend to be somewhat colossal.