A 95-year-old pop culture icon is performing a heavy metal set at one of America's biggest rock festivals this September. He'll have 35 musicians behind him. He's covering Black Sabbath, Iron Maiden, and Judas Priest. He calls the entire project "chaos with purpose." And he'd very much like you to take all of this seriously. His name is William Shatner, and if you think this is a joke, you haven't been paying attention.