I've heard great things about Cory Doctorow's Little Brother published last month. Though one review I found, was mixed. Neil Gaiman though enjoyed it:
Little Brother is mostly brilliant. It's a political polemic, a tract on privacy and information, on hacking and cracking and politics. It's set in a near-future America in which a bomb has gone off, and it's about a 17 year old kid called Marcus versus a Department of Homeland Security that's out of control.
And now the novel, which can be bought, can be downloaded for free.