I gave a talk a couple of years ago on this topic (I read Code Complete and some of the same papers referenced). My goal was to get people to think more about doing things in addition to developer testing to find problems. Personally, I've found (cheap, informal) usability tests to be pretty amazing at finding fundamental problems with software -- the kind of stuff that doesn't show up in a unit test. After all, 100% test coverage can't tell you if your app sucks.

http://www.infoq.com/presentations/francl-testing-overrated

http://railspikes.com/2008/7/11/testing-is-overrated

http://www.scribd.com/doc/8585284/Testing-is-Overrated-Hando...