Seven, the Mist, and the climax to Fresh.

Taylor dropping to his knees and cursing humanity in front of the buried Statue Of Liberty in the original Planet of the Apes. I saw this in the theater when it first came out and it was a total surprise back then. Then of course there was the surprise ending of Soylent Green. I guess back then, it was a lot easier to have a surprise ending.

Rod Steiger's silent scream in The Pawnbroker.

Billy Eliot's 'in-your-face" dance when his father catches him dancing in the gym (the traditional "climax" in the movie pales in comparison to this wordless "and the horse you rode in on" moment).

The climactic scene in Soapdish.