Update: The number of articles can almost make a mini-anthology now. May be useful later now (including ones on efficient markets / state of financial economics) :
1. Darren Acemoglu's (MIT) - one of the first one
2. Krugman's tirade: Mistaking Beauty for Truth
3. Cochrane's response
4. Krugman on 'fresh' rage
5. Mark Thoma's compilation
6. David Laidler at Western Ontario
8. From the Economist 2: What went wrong with economics
9. @ VOXeu: 1
10. Mark Thoma comments on William Buiter
11. Justin Wolfers comments on Kocherlakota
12. Mark Thoma comments on Justin Fox
13. Mark Thoma on whether econometrics is any use
14. Krugman on economics' equilibrium decadence
15. Thoma comments on Economist pieces
16. Dani Rodrik (Harvard) joins in
17. Thoma comments on mathematical formalism in economics (Kaletsky)
18. Kahneman's ideas
19. Robert Levine responds to Krugman
20. David Altig at Atlanta Fed
21. The last temptation of risk - Barry Eichengreen
22. Arnold Kling agrees with Krugman
23. Econospeak disagrees with Cochrane
24. How could Brad de Long not be a part of this
25. Economics and its Discontents - economicprincipals.com
26. Robert Gordon of Northwestern