RedPlum.com
I'm checking out http://www.redplum.com/ — a new site that catalogs deals and coupons in different categories like groceries, entertainment, lifestyle and more. The grocery section will soon have a function where you can enter your grocery list and it'll match up coupons to the items you're already planning to buy. Cool!
It's got local and national deals, but you have to register (it's free). Check it out. Let me know what you think.