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'Buffy the Vampire Slayer' - Halloween, Fear Itself, All the Way
"Buffy the Vampire Slayer" has three Halloween-themed episodes: Halloween, Fear Itself and All the Way. They all have their moments, but nothing can top the eponymous season 2 episode. The gang turns into their costumes, Ethan Rayne makes his first appearance and the Oz/Willow relationship gets going. Excellent episode.