Library Journal offers a variety of best book lists.  The one I watch for is the Young Adult Literature for Adults list.  Here are the books on the 2012 Best Books: Young Adult Literature for Adults:

  

Ask the Passengers by A. S. King

Bomb: The Race to Build – and Steal- the World’s Most Dangerous Weapon by Steve Sheinkin

The Brides of Rollrock Island by Margo Lanagan

  

Code Name Verity by Elizabeth Wein

The Diviners by Libba Bray

Dodger by Terry Pratchett

 

The Drowned Cities by Paolo Bacigalupi

Every Day by David Levithan

 

Moonbird: A Year on the Wind with the Great Survivor B95 by Phillip Hoose

Seraphina by Rachel Hartman