I've read most of the responses and I'm apparently the only one with reservations about the Harry Potter series. I haven't read them, but I don't need to. The premise is clear to me, that the young Harry Potter is indeed a sorcerer and these are the tales of his training and the adventures that ensue following.
I understand that Harry is supposed to represent "good", and is supposed to be fighting "evil", but as a Christian, I have to use Biblical wisdom. My understanding of the Bible is that the only power that is good and worth having comes from God through the Holy Spirit. And we know that witchcraft and sorcery are specifically mentioned as wrong in the Bible. I know this is a fairy tale, it's not true, it's just for fun, but why do I want my children to see that wizardry could ever be good? In real life, it can't be. Since kids are so moldable and exposed to so very much in today's society, I prefer to keep my home as free of glorifying things that are not of God. We also don't watch wizards of waverly place, etc, for the same reason.
Sidenote- we do still let the kids watch Disney tales, at least the ones where the magic is coming from the "bad" person, and the hero is free of magic. (Snow White, Enchanted, etc) And I'm not condemning any Christian who does allow their kids to watch/read anything that I don't, we are all subject to conviction based on what God is doing in us, or through us.