Ok so the first one is about this FBI lady trying to find this serial killer so she asks this other serial killer who is a cannibal for help. He's super cool. The Evil Dead is about this guy who reads an evil book that lets out evil beings who possess his friends and bodies and trees and things. There's more than one movie and they're all funny and cool.
Oh and I also recommend Ravenous, its about these old time army guys stuck on a shitty base in the mountains and like there's cannibals who get powers from eating people and they're after them.