Taking a cue from the Most Disturbing thread, I thought it'd be awesome to hear what everybody's favorite 'Holy shit.' moments in film would be? Preferably moments or brief scenes instead of 'this 45 minute section of the movie'. Can be cheesy or embarrassing, well known or obscure...anything. Even if it's a terrible movie you have a soft spot for, and one part makes you still go nuts. Please tag all spoilers (even if it's a well known movie and even though it's in the subject name). Can't have people whining constantly that we screwed them over.
I could literally list off a million but...
1. The revelatory ending shocker of Se7en. Spoiler: The little flash of Gwyneth Paltrow that makes Brad Pitt finally lose his shit still gets me.
2. The twist in The Sixth Sense. I'm aware it's lame, but I still love it.
3. The 'ear scene' in Reservoir Dogs.