APOCALYPSE NOW. BtVS Intertext/Allusion.
1979 film by Francis Ford Coppola which relocated the story of Joseph Conrad's Heart of Darkness from Africa to Vietnam.
In "Restless," Xander brings a video of the film to the Scooby Gang's vidfest, insisting that it is a "gay romp! It's the feel-good movie of whatever year it was." Later, in Xander's dream, he reenacts the film's climactic encounter between Lieutenant Willard (Martin Sheen) and Colonel Kurtz (Marlon Brando), with Principal Snyder playing the Brando role.