There are many celebrities who are favored by impressionists. These are the actors and actresses who stand out from the crowd for their unique accents and look. Robert De Niro might be one of the most famous actors in Hollywood for his iconic voice and demeanor. While visiting The Graham Norton Show, Tom Hiddleston impressed the guests and Robert himself with his official Robert De Niro impression. This clip has instantly gone viral with fans ofTom and Robert alike.