“Programming with Quartz,” by David Gelphman and Bunny Laden (both from Apple Computer, Inc.) is now available. If you plan on doing any graphics programming on Mac OS X, you should definitely pick up a copy. It is very well written and full of great information.
A few months ago, the publishers (Elsevier/Morgan Kaufmann) kindly sent me a proof of the book and I read it cover to cover. When I was done I wrote a recommendation, which is now on the first page of the published book. It feels funny to see my name printed in such a nice book, especially alongside recommendations from ILM, Pixar, and Microsoft.