Discover your Inner Economist, Tyler Cowen
Guns, Germs and Steel, Jared Diamond
Farewell to Alms, Greg Clark
Capitalism and Freedom, Milton Friedman
Globalization and Its Discontents, Joseph Stiglitz
The Bottom Billion, Paul Collier
Understanding the Gender Gap: An Economic History of American Women, Claudia Goldin
Pragmatic Economics, George Akerlof (Berkeley Prof; a collection of his papers, most/all of which are on-line. Still, worth reading.)
Advances in Behavioral Economics, ed. Camerer, Loenstein, Rabin (Berkeley Prof)
Golden Fetters, Barry Eichengreen (Berkeley Prof)
The Age of Turbulance, Alan Greenspan
White Man's Burden, William Easterly (His earlier book, The Elusive Quest for Growth is also very interesting, but a little dated.)
Development and Freedom, Amartya Sen
The Wisdom of Crowds, James Surowiecki
Your Money or Your Life, David Cutler
The Structure of Scientific Revolutions, Thomas Kuhn
The Heavies: (don't get bogged down in these)
General Theory, Keynes
Wealth of Nations, Adam Smith
Capital, Karl Marx
Just for fun:
Surely you are Joking, Mr. Feynman, Richard Feynman (okay, he is not an economist. but he makes dorky intellectualism and research seem so exciting!)
Periodicals/Blogs: (there are obviously way more blogs of interest than I mention here.)
Brad Delong's Webpage, delong.typepad.com (Berkeley Prof)
Becker/Posner, www.becker-posner-blog.com
The Economist