Record for criminal stupidity: robbing a gun store
Snopes has confirmed the story about a fellow who tried to rob a gunstore and went down in flames. Down to the details that he had to walk around a parked police squadcar to get in, found it full of patrons (including the officer), and threatened to shoot them all unless they complied.
(Some of the details were not confirmed. For instance, he went down with only four bullets in him, not 23. The officer was a better shot than that).