Episode 4, entitled "The Night Stanislav Petrov Saved All of Our Asses", is currently unavailable online, due to copyright issues. At the end of the episode, its titular Soviet lieutenant colonel, years after preventing a nuclear apocalypse, gets to meet this American actor/director of The Postman and Open Range. No, he wasn't really relevant to the story, but he was in a lot of baseball movies.
Kevin Costner