The 2010 Nebula YA nominees are:

Ship Breaker, Paolo Bacigalupi
White Cat, Holly Black
Mockingjay, Suzanne Collins
Hereville: How Mirka Got Her Sword, Barry Deutsch
The Boy from Ilysies, Pearl North
I Shall Wear Midnight, Terry Pratchett
A Conspiracy of Kings, Megan Whalen Turner 
Behemoth, Scott Westerfeld

The rest of the nominees are listed at the SFWA website.