There is a General Mills promotion going on at Albertson (not aware of regions vs. participation). For every $5 you spend on GM cereals you earn a special 14 digit code that comes out of the catalina machine. These special codes can be entered on-line in order to earn $5 coupons on future purchases of 2 boxes of cereals. You need 5 codes to earn a $5 coupon. Combined with coupons and GM promotions at Albertsons you can get codes for super cheap.
I have received my first $5 coupon and have just earned my second $5 coupon. The coupon states $5 off on purchase of 2 GM boxes of cereal. Limit is 10 per household. This promotion ends 11/30/2010 and my coupon has an expiration date of 12/31/2010.