Forget Ash's possessed hand in “Evil Dead II” or Thing T. Thing, the helpful hand from “The Addams Family”. The hands stealing the show in this B to Z are another breed of five-fingered beast entirely. “Demonoid” AKA “Macabra” starts off in a small town in Mexico, homeland of the film's director Alfredo Zacarias (whose other Z-movie credits include “The Bees”), and tracks the bloody progress of a demonic hand which serially possesses a variety of humans, including a plastic surgeon and a priest. Never before has a severed body part demonstrated such ingenuity in eliminating its opponents! In “The Hand”, another extremity turns homicidal after being violently severed in a car accident and even begins to infect the mental health of its former owner (Michael Caine). This second feature from writer-director Oliver Stone (“Natural Born Killers”, “JFK”, “World Trade Center”) is a barking mad psychological thriller with splashes of horror and even a touch of slapstick.