Here are a couple of interesting reviews of Hardt/Negri's Multitude.
The first is over at Journal for Cultural and Religious Theory and is a fair summary of the book concluding with a mild questioning of the ontology of the multitude based in a "strong event." Great introduction if you haven't and/or won't ever read the book.
The second over at The New Left Review. This is a very good introduction into the current issues over resistance to sovereign capitalism. It proceeds as a historical critique of sources concluding that the geneology of the multitude is wed to that of Adam Smith and free market capitalism, the very enemy the multitude is meant to resist. A great read.
Why am I posting this? Because I'm writing my own paper on the political use for Augustine's Eucharistic theology, and I'm using this book as a foil. We can see part of the paper below.