while normally i'm the first one to be personally offended by a broad social trend, Harry Potter has been, and continues to be, a great way to reestablish reading in children. After decades of dumbing-down by use of pictures, oversimplifications, and most recently technology, it's tremendously heartening to see kids as young as 5 and 6 taking an interest in old fashioned books. I applaud Rowling for that.
Besides that, she did it with such imagination that she has created an utterly charming world with her works. I think it's interesting that she's exploring the mortality of her characters, which is often avoided even in adult books.
But I haven't read the books myself, so i only know the movies

wonder how many more they'll make.
paul