I’m not a reader of the Harry Potter series, but I really like this note from Laura of Pursuing Holiness. (I worked together with Laura in forming the Philophronos Blogroll which can be seen on my threads blog. This is my “fun” blog.)
To a large extent I think the difference in people’s reactions to books like these is one of perspective. There’s an old saying: Two men looked out from prison bars, one saw mud, the other saw stars. Similarly with literature you can either see the wonderful themes of the Lord of the Rings, or you can get hung up on the fact that wizards and magic are involved in the story.
There are types of literature and entertainment that we should avoid as Christians. Often, however, we avoid things out of hysteria and ignorance rather than because of considered judgment.