Evil Dead 2: Behind the Screams
The Bruce Campbell (as Ash Williams) carries the first half of this film is insane. His commitment is clear by doing most of his own stunts.
The opening of Evil Dead 2 (1987) is straight groovy fuel, baby.
The Necronomicon flipping pages, the narration, Stop Motion Animation etc...
All setting up Sam Raimi throwing you straight into the Deadite madness with zero "hand"holding.