Actor Christopher McDonald, also known as pompous golfer Shooter McGavin from the classic comedy Happy Gilmore, briefly ...

Before long, McDonald’s took the idea and spread it around to other McDonald’s across the U.S. By the time McDonald’s founder Ray Kroc wrote his memoir Grinding It Out a decade later, the Shamrock ...

McDonald's brings back Uncle O'Grimacey, the beloved green mascot, to celebrate the return of the Shamrock Shake.