Hard Quiz — Episode 15: Mountain Gorillas, How I Met Your Mother, Edith Head, & the General Theory of Relativity

You are watching the episode Mountain Gorillas, How I Met Your Mother, Edith Head, & the General Theory of Relativity Tom Gleeson squeezes another four so-called expert contestants through the Hard Quiz wringer: mountain gorillas, US sitcom How I Met Your Mother, costume designer Edith Head, and the general theory of relativity.