Rascal Flatts have teamed with Denny's for the new Unstoppable Breakfast, which will be added to the restaurant chain's Allnight Rockstar menu on June 23. Priced at $6.50, the meal includes a biscuit topped with country-fried steak, eggs (guest's choice), American cheese, country gravy and three strips of bacon, served with a side of hash browns. The Allnight Rockstar menu caters to young, late-night customers. Other bands participating in the program include Good Charlotte, Gym Class Heroes and Sum 41. Rascal Flatts' current album is titled Unstoppable.