Beauty by Robin McKinley. Reason: Everyone seems to have read this but me.
Ice by Sarah Beth Durst. Reason: I love fairytale retellings, and I've heard good things about this one.
Along for the Ride by Sarah Dessen. Reason: I have never read any Sarah Dessen, and it feels like everyone else has.
...and That's When it Fell Off in My Hand by Louise Rennison. Reason: I am pretty much addicted to these books.