If you invested in Restaurant Brands International (NYSE: QSR) stock five years ago -- parent company of Burger King, Popeyes Louisiana Kitchen, Tim Hortons, and Firehouse Subs -- then you are down 2% on your investment. Restaurant Brands aims to do something about its stock price -- it has hired Patrick Doyle as executive chairman. Doyle is a legend for restaurant investors because he helmed the ship at Domino's Pizza (NYSE: DPZ) as it sailed to a greater than 2,200% gain in just eight years.