Subway has a buy one, get one free coupon available right now. Go here to create a sub your way then receive a free 6" sub with the purchase of another 6" sub and a 32 oz drink. (Thanks, Coupon Deals and Steals!)
Dairy Queen's homepage on Facebook has a great offer right now. Go here and sign up to be a member of the Blizzard Fan Club. After joining the fan club, you should receive 6 coupons to buy one blizzard, get one blizzard free throughout the year. I've been a member of their fan club for over a year, and I've received lots of coupons. My favorite blizzard is the Banana Split without chocolate. Yummy. What's yours?