its the date rape scene jk rowling hinted
http://www.theonion.com/content/video/j_k_rowling_hints_at_harry_potter
Seriously though, I love the books. The characters are compelling and the plot is awesome. I don't like the movies though.
A lot of people do hate Harry Potter cuz lots of other good stories don't get nearly as much attention as Harry Potter does. The top literature readers just label the masses as dumb and that they have no taste in literature. While the masses are lacking literature experience, I don't think their poor taste implies that Harry Potter is some dumb book for everyone too stupid/lazy to go out and engage in more stories. I think the popularity of Harry Potter is cause by the following:
-The 'fun' magical settings of the book. The castle, magic, wizards, ect.
-It appeals to kids and adults
-Compared to other books, it is very interesting to read starting in the first chapter. With most books, it takes a little longer to generate the same interest, at this point most people will have given up because they are not being entertained
-Of course, the compelling characters and deep plot.