Wow am I ever glad it's Friday! I've been hearing a lot about the game Black and White. I hope that Peter Molyneux really does release the source like he had mentioned doing a few months ago. The AI sounds very interesting. At the very least, I hope it's released for Linux, which was also stated. Anyway, procedural textures are awesome, I love this book. The authors start from the ground up, which is nice, compared to some books/papers which assume you already know everything(making the document worthless). There's a heavy influence of RenderMan in the book, but RenderMan shaders look a lot like C snippets, and the authors explain and implent the functions the shader language uses.