Get your boss (and her boss) to watch a usability test. The tactic that I think works best is getting people from higher up the food chain to come and observe even one usability test. Tell them that you’re going to be doing some testing and it would be great for the Web team’s morale if they could just poke their head in for a few minutes. In my experience, executives often become fascinated and stay longer than they’d planned, because it’s the first time they’ve seen anyone try to use the company’s site and it’s often not nearly as pretty a picture as they’d imagined.