Shatterer of Dreams
Super Freak
Am quite hard to make jump but one that got me was in "The Descent" when they've entered the cavern and they swing the camera round with Night vision on and one of the creatures is just standing there behind them.
Another effective one was in "An American Werewolf in London" just that brief moment in the Underground (as we call it here in Blighty ) where the guy's at the foot of the escalator and the wolf just enters the shot.
yes both are great scenes