Discovered a funny site the other day called “You Had One Job." It's a series of photos depicting ridiculous unintentional screw-ups, by individuals and corporations. Most of them are hilarious, but some will make you sad and wonder, "How did this happen?"
In the end, though, management is always culpable. Organizations - whether business or governments - must put systems and incentives to protect the public against things that go wrong.
Some samples below. More at: http://memebase.cheezburger.com/tag/you-had-one-job