Sookie Stackhouse's mama, Charlaine Harris, has seven Sookie books in the top twenty-five. Consider the fact that she's only written eight of 'em, and started doing them in 2001, and the eighth one (in hardback) is still #28 on that list.
P.S. So I tuned it to see if it had gotten better, the show, and lo, the bar owner is not what he seems. I had him figured for a werewolf from the git-go, but nooo, he's a were-border-collie.