Classic Krugman: The Accidental Theorist (slate.com)

See also the classic that Slate chose to republish, macroeconomics in one lesson, Baby-Sitting the Economy:

http://www.slate.com/id/2202165/pagenum/all

And, Marginal Revolution has the best overview of why Krugman won the prize:

http://www.marginalrevolution.com/marginalrevolution/2008/10...

http://www.marginalrevolution.com/marginalrevolution/2008/10...

Wow. It's like Fermi with a 2000 word essay explaining the number of sides on a triangle: Three.

This is the first Krugman article I've read, and while I don't know much about the economy, his points all seemed pretty logical. Krugman's also an amazing writer. That's probably the first economics article I've read and enjoyed.