In general, I was never a fan of wizard books, or high fantasy. But I became OBSESSED with Harry Potter in 4th grade and continue to be a Mega Fan. Since HP, I haven't become a fan of wizards any more than I was before. Harry Potter broke the mold, probably because of the realistic fantasy world, air of mystery, and - most of all - the characters.
Have you read any books in a genre that you don't usually like, but somehow couldn't put down?