There is a site called "The Daily WTF: Curious Perversions in Information Technology". Contrary to the name, the site is perfectly safe for work. In fact, it's probably should be mandatory reading for some workplaces. Why? Because the content of the site can be put in 2 categories: amusing screenshots of software behaving badly and examples of phenomenally bad code. By the former, I mean amusing error messages; error messages that the developers thinks will never show to the user; banks sending letters to demand payment of $0; things of that nature.
Code of the Day section of the site and you'll get a feeling for what I am talking about.