If you are looking at the art book, you already know this film rocked. If you want to know more about the book goto Weta's site and you can see some of the pages from the book. You have seen the movie right?
Http://www.weÂtanz.com/the-art-of-district-9-weta-workshop
Greg Broadmore who did most of the concept art along with Neil Blomkamp has lots of art on his blog
Http://gregbroÂadmore.blogspotÂ.com/
So in summery that is a Yes I liked it and recommend it.