There is a perfect little visual shot in Blade Runner when Deckerd(Harrison Ford) is taking a sip of the Vodka and a little thread of blood runs into it from his mouth.
There was an old (1950s/60s?) version of "The Murders in the Rue Morgue" where the cop is searching the room and the hand(attached to the arm and body) falls out of the chimney, ALWAYS makes me jump!!!!
The storm at sea scene in "Das Boot" it is the closest I've ever seen on film to what a Real storm at sea is like!!!
Hal singing "Daisy, Daisy give me your answer do"
The sword fight in the rain at the end of "Seven Samurai"