I've gotta tell you, there's very little more entertaining than watching a real economist tear a "policy entrepreneur" to shreds. I think half the reason I like Krugman's popular work so much is that he demonstrates a rare talent for this sort of work, but classic summaries by DeLong like this:
THE DOW SHOULD BE WORTH 36000 NOW!! THE DOW WILL BE WORTH 36000 SOON!! IF YOU DON'T BUY STOCKS NOW, YOU ARE MISSING THE ALMOST-CERTAIN OPPORTUNITY TO TRIPLE YOUR MONEY OVER THE NEXT SEVERAL YEARS!!deserve every bit as much credit.
One day I hope to be this adept. (Courtesy of Atrios.)
Edit: Krugman took Glassman to task too. And by the way, anybody who hasn't gone through the archives on Krugman's official page (and the unofficial page at www.pkarchive.org) doesn't know what they're missing. Even if you don't agree with half of what he says, it's a great read regardless.