What is your favorite YA book?

It's The Rookie by Scott Sigler.  Right????  RIGHT?!?!?  Tell Amazon.com by 7/31 for a chance to win some YA Essential Books. NO PURCHASE NECESSARY.

*FYI: Amazon's form seems to be a little confused.  You'll have to enter your EMAIL ADDRESS where it asks for your name and then again where it actually asks for your email address.