This video has been making the rounds recently.  One doesn’t immediately think of rap and macroeconomic theory together, but the video does a really good job of boiling down the two dominant schools of thought and what their disagreements primarily revolve around.  There are some really smart touches in the video (e.g. Hayek peering into his hotel room’s nightstand and seeing a copy of Keynes’ General Theory)–it’s well worth the 7 minutes it takes to view it.

Hat tip to Marginal Revolution and Jon Western