Ghostwatch is the main one that comes to mind for me, i find it very cosy :)
some others that i like set around halloweentime:
- WNUF Halloween Special
- Flatliners
- Ginger Snaps
- Night of the Demons
the new V/H/S movie this year is also Halloween-themed so i am interested to see that! they seem to be putting one out every october now so it has become a bit of a habit for me to have a group watch of the new one bc even when a segment isn't that great it's fun to be able to crack jokes abt it with friends.