http://www.sozi.com/my-shop/33-her-idea-book - a simply coloured but beautifully produced children's book. Another one i wouldn't let my children have though!.... "Her Idea" (the rest of the website is pretty cool too and has a link to the blog)
A collection of illustrators who have created an A-Z of animals, a really interesting variety of styles and highly inspirational. (I think i need to eat my words here though because it seems to only be avaliable in America... If you find it online / anywhere in UK, please let me know!)
Created in the format of a child's educational book - complete with games and interactive activities! - but the actual content aim to teach adults about typography and all the little details. For someone like me where typography is definately not a strong point, this book is perfect!
http://www.hyperactivitypography.com/preview/index.html - this link is for an online flick through of the book. Not a patch on the real thing but you can get the general idea...
Another collective of illustrators who work with pen and ink - my preferred method so far..
And finally... unrelated to graphics but just something i'd love to own.....
I'm pretty sure if i won the lottery (or even just a bit!) i'd get a truck-load of books... i think i'm addicted and i could be here all night, pretty much talking to myself about all the books i want..... So on that note.. I'll quit while i'm ahead!