Web Marketing Resources has posted a brief 3.5 minute video that highlights the benefits of doing usability testing on your sites and applications and includes several real world examples of usability testing of sites. Yes, it is a plug for their services, but it does give you some food for thought and a glimpse into something you can do for your site to improve it, user test it!
WMR Web Site Usability Video Download Page
Thanks to Todd Follansbee for sharing this with me.