Graham Harman sees Bruno Latour as the bridge which philosophy must pass through to get to the twenty-first century and its challenges, and the book may just convince you of that. There are two parts to this fantastically written essay: first, the metaphysics of Latour and his actors -- their irreducibility, their alliances, their translations -- and, second, how Latour holds our hand and helps us into the realm of a new philosophy of objects. The book is charmingly and vividly written, both very accessible and very entertaining (you'll laugh, you just might cry -- seriously, there are a couple of surprisingly moving passages). It encourages the reader to move off in two directions: towards a greater understanding of Latour's fascinating and compelling actor-network theory (ANT), but also in the direction of the work-in-progress object-oriented philosophy, Harman's own philosophical brainchild (though with some very important ancestors that just might surprise you!). This is a really fun philosophical ride, especially since neither work is finished (both Latour and Harman are busy writing and publishing -- keep an eye out for Harman's The Quadruple Object in 2011 which is a more thorough investigation of some of the ideas brought out at the end of Prince of Networks).
If you feel that you are in a kind of philosophical rut, unable to talk about anything but texts and signifiers, this book is definitely for you. If, on the other hand, you are of the scientistic persuasion, and can't stop talking about quarks or the Higgs boson, this book is also for you, and might offer you some challenges to reductionist materialism. And if not, you'll surely have fun reading it.