"Hurt" by Johnny Cash is also good. imo the reason why "When The Man Comes Around" tops it is because of that ending line about the Horseman Death: "and I heard a voice in the midst of the four beasts...And I looked, and behold a pale horse: and his name that sat on him was Death/And Hell followed with him."
Which lets it segway right into POOR MAN'S F***ING POISON, BABY, LET'S GOOOOOO—
In all seriousness, that outro works as a damn good segway even if it's completely unintentional.