John Taylor, a potential Federal Reserve chairman if Romney is elected, has a great blog at Economics One. Most recently, Taylor pointed out how slow the recovery from the 2007-2009 recession is relative to other post-financial crisis recoveries. See his simple and easy to understand post about it here.
Paul Krugman, in probably the least emotional and angry response he's ever written, sees the potential Taylor's argument has to make President Obama and liberal administration of the economy look bad and responds with an accessible criticism here.
Lastly, Taylor responds to Krugman's critique and one can clearly see that Taylor's original characterization of how weak and slow this recovery has been still stands. See here.
I greatly enjoyed the interchange between these economists and look forward to future bouts. My favorite part was how level-headed and reasonable Krugman came across. A welcome change from his standard behavior.