Great lecture. He's the kind of public intellectual we sorely need - one whose clarity of thought and expression illuminates the debate even to those who might disagree. Thanks for posting.
Although I like David Harvey, and would like to read the book if I have time, having "The Guardian" endorse it doesn't say much because The Guardian is a left leaning publication. Having it endorse "Enigma" is not really something earth shaking, although it might be a little bit more outright radical than what they usually do.