Jeffrey Sachs (2008) Common Wealth: Economics for a Crowded Planet, Allen Lane.

Joesph E. Stiglitz (2008) Making Globalization Work, W W Norton.

Daniel Yergin and Joseph Stanislaw (1998) The Commanding Heights: the Battle for the World Economy, Simon & Schuster, N.Y.

Steven D Levitt and Stephen J Dubner (2006) Freakonomics, Penguin Books Ltd.

Tim Harford (2006) The Undercover Economist, Little Brown.

And for fun:
John Kay, (2006), The Hare and the Tortoise, an informal guide to business strategy