After watching a thriller, horror, or suspenseful film, most people will walk out feeling a little on edge about an actor's role or some other part of the film's plot. This emotion of uneasiness tends to roll over and it just becomes a movie they saw. In rare cases, a movie will frighten someone so much that it may result in ever lasting horror for that particular "thing." Here are 10 horror movies in which the film has caused many people to never look at something the same.

1. The Killer Clown in "It"

Never will I ever dare to even look down a sewage drain because of the slight chance Pennywise is there. Stephen King's novel and the film rendition have scared millions into believing the funny juggling circus clowns are simply cold-blooded killers.

2. Spielberg's take on Benchley's "Jaws"

Off the beach of Martha's Vineyard, there lives a killer great white that has caused all residence of the Cape to never drift too far from land. Steven Spielberg's ominous use of the shark is brilliant in creating suspense. That along with the amazing John Williams composing one of the most recognizable tunes ever.

3. Silent Dolls in "Dead Silence"/ "Chucky"

Although this may be cheesy, dolls have always been a sign of mystery and 'life' in our world. Whether it be an army of porcelain dolls in "Dead Silence" or just one single doll rampaging through town in "Chucky", the killer doll idea has been frightening audiences for years!

4. Random occurrences of death in "Final Destination"

To many, cheating death is just a simple idea thrown into a movie. To many others, "Final Destination" captures the embodiment of death as a spirit always searching for victims!

5. The evil spirits of "The Conjuring"

Loosely based on the findings of the spirit hunting couple, 'The Warrens', "The Conjuring" provides and eerie suspense that is hard to come by in horror films today. Using a variety of scare tactics, "The Conjuring" plays with the audiences fears to create horror that will last forever.

6. Cabin fever in "The Shining"

Claustrophobia is usually described as the fear of being closed in a secluded small environment. Jack Nicholson as "Johnny" has managed to terrorize viewers for almost 40 years by portraying how cabin fever can lead to insanity!

7. "A Nightmare on Elm Street" has taught us not to sleep.

Wes Craven may be one of the most evil people on earth. Having the ability to create a character, Freddie, that causes so much hysteria from sleeping is horrid. Craven not only has made it a Elm street nightmare, but rather a nightmare for everyone who watches!

8. John Carpenter...Enough said.

From "Halloween" to "The Thing," Carpenter is a master of reaching beyond the screen to petrify audiences with human and inhuman like characters. From a masked slasher to a transforming being, Carpenter has a knack for creating iconic killers that in some life could become reality!

9. Traveling to outer space never seemed so terrifying in Kubrick's "Alien."

Just the subtitle alone speaks for itself, "In space no one can hear you scream." Bouncing off of peoples already curiosity of space and extraterrestrial beings, Kubrick showcases the worse case scenario of a future space mission and scaring everyone of the prospect of Aliens.

10. Keep the curtain open for there may be a "Psycho" on the other side.

Norman Bates could be on the opposite side of your shower curtain when you are inside. Or he may not be! The suspense/mystery however that "Psycho" creates is a masterpiece and will always cause viewers of the film to lock their bathroom door!