Jack Ryan has been played by both Alec Baldwin and Harrison Ford in the movie incarnations of the Clancy books. Personally... if you know Jack Ryan you come to the conclusion that Alec Baldwin makes a much better Jack Ryan than Harrison Ford. Jack Ryan is a desk jockey who sometimes ends up in the wrong place at the right time. Harrison Ford is too macho to be a desk jockey. Alec Baldwin just fits the Jack Ryan image better I think.