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I don't want to sound cynical about this topic, but Andryukha and I sometimes get so overcome with laughter that people come over from the next office. Basically, you're standing on the battlefield among corpses of various modifications and you realize you have almost no life left and can't flee (it's not your turn), while another monster who is also near death stands beside you, and you know that the second one will finish you off. And suddenly, one by one, they drop poisoned "at your feet"—there hasn't been such a beautiful sense of relief in a long time.
Or you're walking along, all puffed up, fully loaded with potions, feeling like the world is your oyster, and the end of the turn happens on the water's edge. Basically, a tiny fish swims up and not even a beautiful corpse is left of you, let alone the bottles.
Or a classic: two comrades are walking, and for some reason, one has health less than 0—and by a lot. If that isn't a beautiful death.