What would you choose as the scariest movie of all time?

Many have created lists of scary movies and they seem to agree that the following flicks are among the scariest:

The Shining

Halloween

The Thing

The Texas Chainsaw Massacre

Carrie

The Exorcist

The Evil Dead

Dawn of the Dead

Poltergeist

Psycho

TELL US: What's your pick for scariest movie? What scene scares the bejesus out of you?