There are two art books in one package from Katsuhiro Otomo and Katsuya Terada. It's a large size limited edition that's pretty pricey. You can grab the book off from Amazon.co.jp. But check out the book review from Halcyon Realms first.
This is the Japanese edition for The Art of Ponyo. I've also saw the Chinese version. But the English version from Viz Media is still not published yet. Still you can grab some previews from Halcyon Realms. The Japanese edition can be found on Amazon.co.jp and English edition is only coming out in July 2009.
Soul Eater Soul Art. This book was released in March 2009. Now I finally can recognize the characters I saw at a cosplay event months ago. This book can be found on Amazon.co.jp.
Manga Guide to Databases. Wow. You cannot guess what other titles there are on the "manga guide".
Monster Hunter CG Artworks. No idea what's inside. Also recently published in March 2009. You can find it on Amazon.co.jp.