•Why it earns a slot
First published in January 1845 and immediately reprinted by N. P. Willis as a sensation, 'The Raven' made Poe the most talked-about American poet of his moment and established the refrain 'Nevermore' as one of the most recognized single words in English-language literature.
A grief-stricken scholar, alone at midnight and mourning his dead beloved Lenore, is visited by a talking raven that perches above his chamber door and answers every anguished question with a single word: 'Nevermore.' The man's attempts to find comfort or hope in the bird's responses drive him from curiosity to rage to despair, and the poem ends with the raven still sitting, its shadow swallowing the narrator's soul permanently.
This distillation is written from the freely available original, which is always the better read when you have the time: gutenberg.org.