A Night to Dismember (1983)
Manos: The Hands of Fate (1966)
Zombie Lake (1981)
The Gore Gore Girls (1972) (I still love this one to death, though.)
Zombi 3 (1988)
Zombi 5: Killing Birds (1987) (?!)
Bloodsucking Freaks (aka The Incredible Torture Show) (1976)
And any Lifetime film from the 90s starring Meredith Baxter, Delta Burke, Mel Harris, Daphne Zuniga, or Valerie Bertinelli.
Sara: "Have you ever heard of the three sisters?"
Carlo: "You mean those black singers?"
-Dario Argento's Inferno.