As controversial a figure as J. K. Rowling may deservedly be, there's no denying that the Harry Potterseries revolutionized not just the fantasy genre, but the publishing industry as a whole. Throughout seven incredible books that sold like the hottest of cakes, Rowling revitalized children's and young adult fantasy in ways that were unheard of at the time. In all honesty, it seems unlike that a fantasy book series will ever have a pop-cultural impact of quite this scale ever again.