28 days later - (memory is a bit foggy on this one, i saw it ages ago) when they walk into the church (or building) and the priest is alive but infected with the virus. that scared the shit outta me for some reason.
Scared me too. Loved that movie so much, especially the part where the girl chops up her friend with an axe as he examines the fresh bite wound on his arm
thats scene in the Sixth Sense, when the kid sees that body hanging in his school
and the scene where he gets locked in the attic
Trainspotting - when he sinks into the floor
when Marty plays Johnny B. Goode at his parent's prom in Back to the Future