David Suchet Reflects on 25 Years as Poirot . He is the definitive Poirot. He fit my vision of Poirot from reading all Agatha Christie's mysteries and I have loved his portrayal from the first episode.
Agatha Christie: Poirot TV Poster >>> The best, most definitive Poirot ever. Christie's daughter supported his being cast in the part and contributed significant notes ("We do not want to laugh at Poirot, but with him").