Thick Fog

I was in the car as mum was driving me to school and man o man it was foggy. After I saw the sunrise which seemed heavenly this reminded me of a horror film and there is something about the tree how it stands alone, kind of silhouetted and though the blinding light in the corner is the flash against the car window glass, it could be the moon or represent an alien.
My God I'm so weird.
Anyway I'd like to hear what your favorite horror story of film from all time?