With my top 10 i decided on nothing left field, just sticking to classic horror.
The Devil Rides Out (1968)
The Black Cat (1934)
Satan's Slave (1976)
The Blood on Satan's Claw (1971)
The Craft (1996)
Night of the Eagle (1962)
Night of the Demon (1957)
The City of the Dead (1960)
The Ninth Gate (1999)
Season of the Witch (1972)