I don't prefer the new & modern stuff unless it's really good. I prefer the classics way more just like yesterday's eras. Yeah, we post many movie trailers here. I posted a lot last year that I thought would have major interest. In short you can look back there. Any Universal Monster film or series would do nicely including Abbott & Costello. The Dark Universe such as Mummy 99 , Wolf Man 2010, Mummy 2017 etc. would too. Of course any film with Michael Myers, Jason, Freddy etc. Alien & Predator. The Thing. Evil Dead Trilogy. Ghostbusters 1 & 2 despite GBII is a Holiday & New Year's film. As much as I love Kaiju films, only King Kong 1933 & Godzilla 1985 is what I consider horror for Halloween though if you see King Kong 2005 during the second hour when they get to Skull Island and before they capture Kong, now that is a pure horror fest right there especially if you see the extended edition
The Monster Squad is a must. Sometimes I watch My Science Project for Halloween time but mostly for My B-Day since it's arguably My fave film of ever of all-time. If you don't know that one is then you missed My great spotlight. I've posted a lot of obscurities in My Horror Topic too which I plan on posting more soon
That's all for now