My favorite stupid criminals stories (no time to look up links) were the one from the other day (can't remember where) where a guy robbed a bank. His wife and kids were in the car; bank employees coming into the building noticed him because he got all nervous and pulled his pants down and dookied in the parking lot before coming in. He told the teller he had a gun and give him the money; the teller didn't give him all the money, and put a marked bill in it. Plus, they had him and his car on surveillance tapes, and his car was easily identifiable from where he'd been in an accident the previous day and so that was on file with the popo. They caught him, natch, and his wife was arrested as well, because they had the both of them on tape from another day in a purse-snatching incident. HELLO.
The other one was about a month or so ago in Gwinnett...these maroons drove up to somewhere like a Taco Bell to rob it (with customers in the store)...they arrived in two cars. So once inside, they shook down the customers as well as robbing the cash in the store, and got watches, jewelry, etc. So this one customer had a nice car (a Charger, I think) they really liked, and they took his keys. They were all excited about their new wheels, and left in one of their cars and the Charger. They left their other car, in which they had placed the money and other stuff they'd stolen, and their guns. Popo caught them about 15 minutes later.
As my mother says, thank the Lord most criminals are stupid.