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Tear Jerker: The Stanley Parable
Narrator: This is a very sad story about the death of a man named Stanley.
En route to the suicide ending in the HD remix, The Narrator will beg Stanley not to kill himself, because for the for once in his life, he's happy. If Stanley dies, the game is reset, and he loses the space room. He is begging Stanley not to take that one beautiful moment away from him.
Additionally, if you alternate jumping from the catwalk and returning to the space room enough times, the Narrator will eventually call you out for doing it to play with his emotions, to provoke a reaction from him. Especially upsetting, considering that he's probably right.
In both the original and the HD remix, The Pawn/Phone ending. Also the source of the page quote.
When you unplug the telephone, after doing both branches afterwards (including a different boss' office with a voice receiver instead of a keypad that can't be used due to Stanley being a Heroic Mime, and then the game completely glitching up due to "narrative contradiction"), the game then resets back to the initial two doors near the beginning... except you are placed above the ceiling and unable to do anything except walk around and look down at Stanley standing motionless, while the Narrator begs him to make a choice but with no success. The credits roll.