Here's a good site, and a story I had heard as well from a local LEO friend. Note that this site has a ton of stupid, and often tragic (of course) stories concerning guns: http://www.officialdarwinawards.com/
"On February 3, 1990, a Renton, Washington man tried to commit a robbery. This was probably his first attempt, as suggested by the fact that he had no previous record of violent crime, and by his terminally stupid choices as listed below: 1. The target was H&J Leather & Firearms, a gun shop; 2. The shop was full of customers, in a state where a substantial portion of the adult population is licensed to carry concealed handguns in public places; 3. To enter the shop, he had to step around a marked Police patrol car parked at the front door; 4. An officer in uniform was standing next to the counter, having coffee before reporting to duty. Upon seeing the officer, the would-be robber announced a holdup and fired a few wild shots. The officer and a clerk promptly returned fire, removing him from the gene pool. Several other customers also drew their guns, but didn't fire. No one else was hurt."
[This message has been edited by Jeff Thomas (edited 01-01-99).]