...insurance scam a few years back where some guy arranged for his Porsche to be stolen. He naturally claimed back on his insurance. The car was then broken and he bought all the bits and, lo and behold, he had his original car back PLUS the insurance payout. Worked very well until somebody said something in the local pub and a nice gentleman who wore a blue serge suit to work overheard and did some digging!
Upshot, the insurance co got their several thousand back, he lost his car - proceeds of a crime - and he went to jail.