Movie list "slideshows" are everywhere these days. But I did run across this one that I liked— Moviefone's day-by-day countdown to, not the scariest movies, but the scariest actual movie moments. They have "clues" for each day in October and reveal the answers one day at a time.
Link to Moviefone's 31 scariest movie moments.
Halloween's clue? "This ghostly tale was the director's first and only "horror" flick. The scariest scene will have you seeing double."