Horrifying Scary or Distrubing scenes in NON horror films

Sometimes you are watching a standard movie and all of a sudden they pull a scary, disturbing or horrofying scene on you and its more effective than in a horror movie

example

Leon (sorry Nikita The Assassin) - the stabbing a pencil through someone's hand

Fire In The Sky - the 12 minutes or so at the end showing alien probing is damn creepy

Brazil - just when Sam is about to be lobotimised

anymore?

the last part of "The Seventh Continent"

I had nightmares fir almost a week after