Like so many heroes before her, sometimes Buffy can slip into a self-righteous rut while everyone else gets to have much more fun — and her Season 6 dark period, while psychologically valid, was a slog. That’s the territory when your name is in the title. But none of it diminishes Buffy’s place as a pop culture touchstone, a woman in all her complexity who is also our hero, racing into danger and kicking evil’s ass as best she can.