Sunny D's Book Spree is back this year, so now's the time to start collecting participating labels if you haven't yet begun.
New this year: There doesn't appear to be an alternate entry method. They also have a list of participating items so that you can be sure to purchase those that qualify for this promotion. This year's promotion began 8/1/2011 and will conclude 11/30/2011 or earlier, while supplies last. This means it is best to get your labels in early!