I've recommended the Horror episodes of The Pure Cinema Podcast for some deep cut ideas. They filter their ideas through a movie marathon idea, since it's a podcast for the New Beverly theater, and they have events like that at the theater. Usually it's more wide open, but this year they had categories. I was thinking of my own ideas that I think would be fun for an event like that or a marathon at home, and was wondering what others here would come up with (if this interests you). These episodes have been the reason why I've tried flicks like I Madman, Hell Night, Messiah of Evil, and others. They tend to go with deep cuts that I can't even find on disc, so that is frustrating. I was trying to come up with stuff that I at least saw streaming somewhere.
Categories:
1 - Dimension Horror (the film company)
2 - Pre-70s
3 - Horror comedy
4 - Slasher/giallo
5 - DIY/Regional horror
6 - Wildcard
I was trying my best with these, but I didn't have much luck with a couple categories and available for streaming. I'm not good with pre-70s and DIY/Regional gave me fits, but I did see a few deeper cuts when looking through for ideas:
Dimension: Nightwatch ('97) is a remake of a movie I still haven't seen the original for. I have only seen it the once, but it stuck out to me and I did suggest it to people at the stores. It has Nolte, McGregor, Arquette, and Brolin.
TRAILER It looks like it's on Kanopy. The Mist or a Halloween movie would be a fun option too.
Horror Comedy: I was excited to see
Dead Snow ('09) pop up on AMC+ and will probably watch that one again, and that would have been my pick here too. I also wrote down Grabbers and Slither as options.
Trailer
Slasher/giallo: Especially in the context of a group/marathon type setting at night, I think
Hatchet ('06) would be a blast. Fun seeing Tony Todd and Robert Englund in this, and Kane Hodder is the bad guy.
Trailer
Wildcard: The Loved Ones is on Prime and stood out here. Again, only seen it the once, but it has stuck with me since. It's a bit demented and gory, but it's also well done with some good emotion and acting. Think table/dinner scene from TCM... I thought it would be a good capper to end the night and send people home to.

I think I will watch this one this week to refresh my memory.
Trailer I also considered Teeth.