The book is Hack This: 24 Incredible Hackerspace Projects from the DIY Movement by John Baichtal. It features 24 hackerspace projects and a few other sections on things like how to start your own hackerspace. It even includes a quick write up on theTransistor’s MAME cabinet.
Overall it really is a good book full of interesting projects from many hackerspaces. The best part is that right now you can pick up a copy over on Amazon for $15. I highly recommend this. :)