The Living Force
I've also read it having first heard about it on Mind Matters, the guys did a really great job with the show and they've basically covered all the main points from the book. I haven't read other books by Hancock, but he hit the nail on the head with this one, IMO.Approaching Infinity wrote about it here and here. And there's a book review here. Oh, and there a Mind Matters radio show where it's discussed here.
I read it too. It was interesting, and much fits with the discussion on the forum. As for the writing itself, Hancock's writing is a bit long winded but it makes for easy speed reading.