American presidents like to make jokey TV appearances, especially once they no longer have the worst job in the nation. What they don’t tend to do is act. Even Ronald Reagan, America’s big actor-turned-POTUS, didn’t return to his old job after office. (Nor has Donald Trump, despite a history of playing himself onscreen.) Still, Game of Thrones vets David Benioff and D.B. Weiss thought they could coax Barack Obama to do some acting. Alas.