24. 'Mockingbird' (Season 4, Episode 7)
Melisandre bathing au naturel, Daenerys ordering the sexy sellsword Daario Naharis to strip on command: There's hot stuff aplenty in this one, if that's what you're after. But "Mockingbird" is memorable for what children say rather than what grown-ups show. Arya Stark delivers the series' most nihilistic line, about the big nothing that awaits us after death: "Nothing isn't better or worse than anything. Nothing is just nothing." But her old friend Hot Pie unintentionally utters an optimistic alternative when holding forth about the importance of condiments: "You cannot give up on the gravy." Hope, the episode argues, goes well with any dish.