Dr. Mankiw is the author of the textbook used for this course. His blog is a popular resource for students and teachers who use his texts.
Gary Becker is a Nobel Prize-winning economist at the University of Chicago. Richard Posner US appeals court judge and senior lecturer at the University of Chicago law school. The two discuss and debate a broad range of topics in economics, law, and policy.
If you like charts and graphs, Mark J. Perry, Professor of Economics and Finance at the University of Michigan, Flint, has the blog for you. Interesting analyses and interpretation of economic data.
Scott Sumner is a monetary economist at Bentley University, offering an interesting and in-depth take on monetary policy.
George Mason University Economists Tyler Cowen and Alex Tabarrok discuss current economic events with a free-market perspective.
National Public Radio's Planet Money team cover the global economy in a variety of media, including blog posts, audio podcasts, and Twitter.