Hey MVD, I love The Shining! I enjoyed the book also which has some differences from the movie. I saw this in the theater with friends and to be honest, we found it more as a comedy, laughing at all the inappropriate times. Plus we were partying and out of our skull had an influence. Seeing it later numerous times, I love it. Stanley Kulbrixk is a great director with such an attention to smallest detail that everything in the movie means something.There are some videos on YouTube where people discuss in depth the symbolism and some possible meanings for different happenings in the film.
Another frightening movie is an old European silent movie from the 20s called Haxan. You can watch it on YouTube. It's about witchcraft and Satanism through the ages and the correlation between witches and mental illness. It has some frightening imagery.
Another Kulbrick , A Clockwork Orange" use to be shown on Halloween at midnight at the theater on 8th Street. Another good one.
Campier horror movies ,try Abbott and Costello meet Frankenstein or one of my favs, Leprechaun 2 Back to Hood. ') Happy Halloween!