The intensely graphic description of what just happens to the player character when you walk down the Master's hall.
The Cathedral is a huge stone building that seems perfectly intact, leading you to wonder how it avoided devastation. The answer? It didn't. The Master's minions built it themselves. Yes, there are very few intact bricks you can find in the wasteland and they built a cathedral out of what they could find.
The Overseer gets one if the player ends up with the bad ending. When Vault 13 is overrun by the super mutants, he goes out blasting several of the mutants to hell with a mounted turret before being overwhelmed.