Written and directed by nerd icon, Joss Whedon, a risky all-musical episode of "Buffy the Vampire Slayer" became one of the cult show's most revered moments in the seven-season series. Sarah Michelle Gellar's Buffy and the rest of the Scooby Gang sang with their real voices in "Once More, with Feeling," while its pluck and playfulness made it a hit with fans and critics alike.
In a special Halloween show at the Hackney Picture House in London, singer-songwriter Kate Nash (sporting a blond Buffy wig) flew her nerd flag high, performing all the songs from "Once More, with Feeling," including "Buffy's" raucous opening theme song.
Check out Nash's self-described favorite, "Walk Through The Fire," below, which performs with a stand-in Spike, Willow and Giles.
Head over to Bleeding Cool for the whole show.