I worked at Xerox for a number of years. After I left they decided somehow they still owed me 8 cents and sent me a check. I never bothered to cash it. Six months later they sent me a letter saying their records indicated the check was never cashed, so the included a SECOND check for 8 cents!!

I wa going to throw that check out and see how many times they would send it, but my wife deposited it.