This is a really good article when considering use cases for your users. Sometimes classifying it under 'stupid user syndrome' just isn't good enough, you have to understand that they are not unintelligent, they just don't grasp the same domain knowledge as we do.
As Merlin Mann said, we're all nerds (see http://www.43folders.com/2010/09/10/my-paladin). We're just not all nerds in the same disciplines. E.g. I couldn't care less about lawn mowers but I wouldn't dare say that to a clerk at Home Depot.
