Named after its latest hit album, Rascal Flatts’ Unstoppable Breakfast headlines the newest Denny’s Rockstar menu. The Rockstar menu presented by Dr Pepper is part of Denny’s ongoing Allnighter program, a sub-brand launched last spring that provides young, late-night customers with food in a cool dining atmosphere from 10 p.m. to 5 a.m. “After spending many late nights eating at Denny’s after shows, we jumped at the chance to create a dish customers will really enjoy,” says the group's Gary LeVox. “Like Denny’s, we work very hard to provide our fans with a high-quality product at a fair price, so naming our breakfast after our current album, Unstoppable, made perfect sense." The new Rockstar menu starts at $3.99.