Yeah, the most harrowing part of this is how many tests were done. We’ve all seen the images from the most famous tests, but there were so many, many more.
Another good bit of real-life harrowing video is this one, a time-lapse map of all the nuclear explosions there have every been, done at a rate of about 2 months/per second, up to 1998:
I lived in Nevada for a year when I first moved to the states. I took a certain perverse pleasure in the fact that a majority of nuclear explosions that the human race has detonated in its history were in my home state 
Never mind. Read first then reply.
Not from a movie, but I always find this video chilling:
As a teen, I read Asimov’s story “Silly Asses” and was astounded by the insight hinted at by the animation above: we (Humanity) are doing this all backwards.
We should have mastered space flight long before weaponizing nuclear fission, and using nuclear weapons on your own planet is actively suicidal.