I just finished Adventures from the Technology Underground by William Gurstelle, an interesting non-fiction book about projects being accomplished by a slew of DIY technology geeks. If you are a fan of Robot Wars, Junkyard Wards/Scrapheap Challenge, Make or even Mythbusters, you will probably enjoy this book. It's a bit short and is more of a collection of vignettes than a deep study of the topic but the people he meets are all interesting and the book could serve as a resource for someone trying to research modern DIY.