Resources for usability testing

Previous articles covered some details about usability testing. I hope by now I have been able to cover some details of what usability testing is, why it is important, and some tips / issues that one needs to cover. However, there is always more that you can explore, read about, and hence you should have an idea of some of the secrets to having a good usability testing program.
Infodesign.com.au (link)
Accessibility forum (link)
Userfocus.co.uk (link)
Web Site Usability (link)
Web usability (link)
Usability.gov (link)
Doug Ward’s website (link)
Usability testing (link)
deyalexander.com (link)
Column by Jakob Nielsen (link)