My parents received a letter and "check" fromFinancial Express . The letter claims "We are pleased to inform you that you are one of the winners in the 'NORTH AMERICA CONSUMER PROMOTION DRAW' organized for all customers of...WALMART [sic], SEARS, HOMEDEPOT [sic], SAFEWAY." They then go on to say that the prize is $9.851.80 and the the check enclosed is to be cashed and returned in the form of money transfer in order to pay the "non residents" [sic] tax applicable to the winning. My parents identified this as a scam, but I thought I'd report it to help others.

Their scam uses a bunch of different addresses to confuse the reader (or cover their tracks):
Renturn address was North York Civic Center5100 Yonge ST. North York, ON M2N 5V
Address on letter was Finanical Express One Broadway, 16th floor Cambridge MA 02142
Address on Check was Northrop Grumman Fedral Credit Union 879 W.190th Street Gardena California90248