My favorite deal was the Quaker / milk deal. If you bought 4 boxes of Quaker granola bars (or other Quaker products), you got FIVE free half gallons of milk or juice. I needed the milk and juice, and I had coupons for the granola bars.
This truly does show me that having a nice stockpile started pays off — quite literally! I can focus my efforts on buying what’s on sale rather than having a huge list of items that I absolutely have to buy.