Albert Finney was nominated for an Academy Award for his Hercule Poirot portrayal, in the 1974 adaptation of "Murder on the Orient Express," writes iNews. Actor Peter Ustinov played Poirot six different times, for various films and TV movies.

More recently, Kenneth Branagh has tackled the role in cinematic versions of both "Murder on the Orient Express" and "Death on the Nile." According to Branagh (via NPR), the hair and makeup artist for "Orient Express," Carol Hemming, created a double mustache to emphasize how extreme Poirot is in regards to his physical appearance. Branagh clearly understood how central Poirot's appearance is insofar as people then tend to underestimate him during the course of his investigations. Branagh also made a point of going through each Poirot story and finding the pieces of the character he wanted to use to make his portrayal of Poirot distinctive from other screen portrayals.

John Malkovich shocked Agatha Christie fans when he, cast as Poirot for the 2018 BBC show "The ABC Murders," elected to play Poirot sans moustache and with an English accent. According to Radio Times (via iNews), he said, "Obviously this is a very known and loved character, and there may have been some worries that we weren't, as it were, saluting that."

Agatha Christie Limited writes that Poirot was featured on TV as soon as 1937, soon after the BBC debuted onair. He also appeared in radio that year, in the story "Yellow Iris."

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