Björn Karlsson has a book out titled "Beyond the C++ Standard Library: An Introduction to Boost". Is this book more than just a print out of the existing Boost HTML documentation?

Absolutely, actually it's a very good book IMO (and not just because I proofread some of the chapters!). Basically, it looks at a selection of core Boost libraries, and addresses the following questions: What is it? What's it good for? How does it make my code better and more robust? When should I use this? How do I use it? So it's a bit like an extended tutorial, but it addresses the when and why questions much better than I've seen anywhere else. John.