I've changed the title on the post and added an Update to the top of it. I'd rather not resubmit to hacker news since I think it's taken up enough attention already. Thanks to you both for the suggestions.
Commence downmodding in 3, 2, 1...
But back on topic. There is some research supporting unittesting (McConnell writes about it in Code Complete) it doesn't find even half of the existing bugs though, and it should be supported by other testing methods.
The main-big-very-nice advantage of unittesting is that any bug that is _does_ find is easily found and fixed.
Generally, people like having their attention taken up, provided you follow their advice. :-)