Some Assembly Required

"Some Assembly Required" is episode 2 of season 2 of Buffy the Vampire Slayer.

A dug-up grave in a cemetery turns out to be not an isolated incident -- bodies of girls in traffic accidents are being dug up. The culprits are two high-school science geniuses, who are mixing body parts to create a stay-at-home companion for a brother raised from the dead. Cordelia, who once had a crush on the brother, is kidnapped for her head. The Scoobies arrive in time to end the grotesque plan.

Trivia

 * Frankenstein - This episode is an obvious nod to Frankenstein. It also deals with how people may react to the death of a loved one. The writers would later also pay homage to Frankenstein with the character Adam.
 * One character asks 'does it really count as an army if there are only three of them?' in reference to Plan 9 From Outer Space.
 * Cordelia's Science fair project, "The Tomato: Fruit or Vegetable?" is completed by Willow in three words: "It's a fruit."
 * This episode sees the destruction of the "old science building," the only structure of the original school still standing after the earthquake of 1937.
 * Fondren High is mentioned as a rival school to Sunnydale High.