What is the Best Scary Movie of All Time ?

In the spirit of Halloween I though I would ask what the best scary movie of all time was.

Here is a list of scary movies my social networkers have compiled:

• Poltergeist – II (This is the “winner” two people voted for this movie)
• It
• Original Nightmare on elm st
• A tale of two sisters
• Blair Witch Project
• The last Broadcast
• Texas Chainsaw Massacre
• The Shining
• The Exorcist
• Eyes Wide shut
• Shutter (The Japanese version)
• Devils Reject

Some of these movies I’ve never heard of but upon Googling seem pretty interesting. I guess I have Halloween plans now !

What do you think is the scariest movie of all time ?