The Hunger Games Was Just Voted the 'Best Book Ever' by Goodreads Readers

I've never read Mockingbird; I gotta say that it doesn't sound like a fun read. I really admire Jane Austen, though I find her books a bit of a slog even now. (I really hated them when compelled to read them in high school, though with the aid of some film adaptations I have a much better understanding of what those books are about.)

Hunger Games does nail a sweet spot of Young Adult fiction: compelling, easy to read, but not completely dimwitted.

The first Harry Potter book might have been a good choice, but it's really a juvenile rather than YA, and that narrows the audience somewhat as a "favorite book". Later Harry Potter books are more appealing to older readers, but no single one of them quite captures the lightning of the first one.