I just added couple more, here are the video versions:

Stanislav Petrov: https://www.youtube.com/watch?v=L7EmLf4Xlq0

Oleg Antonovich Gordievsky: https://www.youtube.com/watch?v=yprpoPc2g0k

Vasili Arkhipov: https://www.youtube.com/watch?v=iLokpu4ixQE

According to some comments "The Collapse Of Communism: The Untold Story" is a movie about Oleg Antonovich Gordievsky and there is a book "The Spy and the Traitor."

And Stanislav Petrov has a movie as well: https://www.youtube.com/watch?v=xTFUqnY3E3Q

The Petrov movie you linked to, The Man Who Saved The World (2014) is a very good documentary. In it, among other things, Petrov meets his favourite actor, Kevin Costner, who asks him how many people would have died had he followed orders. Petrov says, everybody. Also he gets an award at the UN and visits a US missile silo. With reenactments of him saving the world.

https://www.imdb.com/title/tt2277106/