[BlackCatti]

Give me suggestions!

[houseri]

Try "Antichrist" by Lars von Trier.... not basic horror flick, but very disturbing.

Twin peaks is my all time favourite tv-series, nor horror per se, but it does have that aspect also, especially the last season which came out couple of yrs ago.

[Kalle]

Good horror movies in totally random order:

Suspiria
Tenebre
Opera
Deep Red / Profondo rosso
28 Days Later / 28 Weeks Later
It Follows
Night of the Living Dead
Dawn of the Dead
Day of the Dead
House of 1000 Corpses
Cannibal Holocaust
Re-Animator
The Thing
Zombi 2
Shutter (original 2004 version)
The Exorcist
The Texas Chainsaw Massacre
Alien
The Descent 1-2
Dog Soldiers
Halloween
Martyrs (2008)
Dèmoni
Haute tension
Inside / À l'intérieur

Let me know when you're done with this list and then I'll add more for you. 

[General_sandels]

The Nun
The Apostle
Nightmare on Elm Street
Summer of 84
Hereditary
Halloween
A Quiet Place
Bird Box
 

[joozebbi]

Hard one because it's actually hard to find horror movies which are scary. But these have effected me back when I watched them first time.

Jaws
The shining
The howling
Halloween 1-2 (orig)
The ring (remake)
The grudge (remake)

TV-series:

American horror story

[Mansikkanoppa]

Haunting of the hillhouse
American Horrorstory

[Diso3000]

Most of the horro movies aint scary at all. But Psycho Thriller do affect me in some way

[Luk3_d]

Grimm is great series or from movies i prefer IT