Savings at the grocery store

I did a big grocery shopping today. With a combination of e-coupons (the ones that are put on your shoppers card), circular ads, and manufacturer coupons, I saved $83.99 and spent $159.16. In this shopping I bought about six months worth of laundry detergent, toilet paper, dishwasher detergent, dishsoap, and papertowels. I also bought about 3 months worth of food, although I will have to buy produce, milk, bread, etc. I'd be interested in hearing your saving ideas. Of course the papertowels will probably last longer as I don't really use them---and I make my laundry detergent. I just like the tide for my handwashables.