People Are Stupid and Other Principles Of Macro-Economics

The "stand-up economist" translates Harvard professor N. Gregory Mankiw’s introductory economics textbook "The Principles of Economics" into more useful, shorter and funnier restatements. (And, yes, we do realize that the words useful, shorter and funnier are more or less synonymous.)
There's a full transcript and explanation here.
[Hat tip goes to the Big Picture for bringing this to our attention.]