(not vetted yet)

• Trick 'R Treat, Hocus Pocus (not horror, but we watch every year!), Cabin in the Woods, The Witch, The Others, Scream, 28 Days Later, The Thing, Sleepy Hollow
• The Descent, the new It, Cabin in the Woods, 28 Days Later, Gremlins, Alien, Sunshine
• The Others, Sleepy Hollow, and The VVitch, also The Mist, The Ring (and Ringu), The Haunting of Hill House, The Orphanage, Orphan, 10 Cloverfield Lane, and Hereditary, as well as more psychological thrillers like Misery, Dolores Claiborne, Red Dragon, and the Silence of the Lambs.
• Shutter Island