How Thor: Ragnarok turned the Hulk into an improv comedian

This past weekend, Marvel’s Thor: Ragnarok became the studio’s 17th straight number-one opening, thanks to a well-established formula of heroic action moments, grand mythology, and evil entities eager to destroy the universe. The format fits the familiar pattern of the Marvel Cinematic Universe, but Ragnarok nevertheless stands out due to the unique comic sensibilities of director Taika Waititi. He doesn’t take himself — or superheroes — too seriously, and he heavil