genre- horror

examples:

• Cabin in the woods
• Paranormal activity
• Orphan
• Insidious
• Woman in black
• Scream
• Sinister
• My bloody valentine 
• Exorcist
• Nightmare on elm street
• Grudge
• 28 days later
• The crazies
• Don't be afraid of the dark
• Drag me to hell

History: 

             Horror films go back as far as the onset of films themselves, over a 100 years ago. From our earliest days, we use our vivid imaginations to see ghosts in shadowy shapes, to be emotionally connected to the unknown and to fear things that are improbable. Watching a horror film gives an opening into that scary world, into an outlet for the essence of fear itself, without actually being in danger. Weird as it sounds, there's a very real thrill and fun factor in being scared or watching disturbing, horrific images.