A man, a severed head, and a sunbaked excursion into delirious ultra-violence: Peckinpah’s grindhouse–meets–art house pulp masterwork gives regular character actor Warren Oates his most memorable role as a sunglasses-sporting, tequila-swilling barroom ivory tickler who embarks on a demented road trip through Mexico to fulfill the titular request. The only one of his films on which Peckinpah had final cut—and thus is the purest distillation of his fatalistic vision—this existential acid Western has the surreal texture of an extended hallucination.