I don't think this list can beat the horror of Ra.One, but I'll make humble and feeble attempt. Extending it a little beyond the Supernatural / paranormal and adding some cult movies as well, so this is not a "best" list, rather a random selection from the movies I've seen.
- The Exorcist
- The Omen, Damien: Omen II and Omen III: The Final Conflict
- Ringu (Japanese). If interested, you can watch Ringu 2 and Ringu 0:The Birthday. Ringu: Spiral follows the book more closely and does not conform to the plot of the other two films.
- [Rec]
- Let the Right one in
- Shutter (2004 Thai Original): The American re-make is crappy. In general, I find original horror movies to be better than Hollywood re-makes though I can make an exception for a few films like The Ring.
- Tale of Two Sisters (Korean original)
- The Thing: John Carpenter version. One of my favorites!
- The Shining
- The Orphanage
- Evil Dead Series: Just get into a campy mood before watching. The second part is one of the first Horror Comedies I watched.
- Paranormal Activity: Wonder why people consider bass-heads as "bad" people? Watch this film. Apparently demons are associated with Sub-bass.
- Brain Dead / Dead Alive: Before Peter Jackson made movies on hobbits and giant apes, he was making really gory, vomit inducing movies on a tight budget. You should start with 'Bad Taste' though! A little later, he made "The Frighteners", which is a different kind of a film from these two.
- Near Dark: While not as great as many other vampire movies, this one is a slightly different take on vampire movies. Other vampire films from around that time would be "Fright Night" and "The Lost Boys".
- The Others: More psychological than scary.
- The Exorcism of Emily Rose: More a Court room drama than horror film, but well done!
- In the Mouth of Madness: A relatively unknown John Carpenter film with Sam Neill. I've watched it long time back and liked it well at that time. Not sure if it will satisfy me if I watch it again though!
- First three of the Dead Series by George Romero - The Night of the Living Dead (1968), Dawn of the Dead (1978), Day of the Dead (1985).
If you have the patience and the mind set, try watching F. W. Murnau's "Nosferatu" (1922). I was a bit annoyed by the lead actor, but the count's performance, make-up and special effects considering the time period stand out.
Excellent. And I love the fact that you mentioned "Tale of Two Sisters (Korean)". It is one of my fav.
Here are a few
1. Let The Right One In
2. Haute Tension.
3. The Thing (Original)
4. The Descent
5. 28 days later
Regarding the first movie, are you talking about the Eng version or the orginal Lt den rtte komma in?