From 6am to 2pm this Tuesday the 3rd Denny's will be giving a free grandslam breakfast to every guest that comes in. You will also receive a booklet full of coupons to use the next time you come in. So go out and have a free breakfast on Denny's, but be prepared to wait a little possibly as this ad will be running this afternoon during the superbowl and will be getting lots of attention.