Hercule Poirot/YMMV


 * Funny Aneurysm Moment: The short story "The Kidnapped Prime Minister", set in 1919 and written in 1925, is about Poirot having to find the titular kidnapped Prime Minister before the Versailles negotiations start, because if he is not present then the treaty might be 'too lenient'. Of course in hindsight it's generally thought now that the harshness of the Versailles treaty played a major role in the rise of Adolf Hitler.
 * Readers in Mourning: Poirot is the only fictional character to receive an obituary in the New York Times. Although, at least one paper did an obit for Chewbacca.
 * Recycled Script: Some of Poirot's adventures are so good, other characters copy them.