Bad Designs
If you look for Usability in the web it looks like that Usability is only a quality of software, then you find links to sites related with Web Usability, Win Usability, and so on.
But usability is not only our problem, all people making something in order to interact with humans must be aware of Usability.
There is a site showing bad designs in others areas http://www.baddesigns.com/examples.html Enjoy :)