120. Right at Your Door (2006) (Dir Chris Gorak)

Five years before Mr Sodenbergh did it, this ran the "evil gems are gonna get you" tope, and did it to fine affect. Rory Cochrane plays a stay at home husband trapped in his surburban home as a dirty nuke goes off in downtown LA, where his wife in at work. He struggles with his desire to help her, and his fear of the outside, the diseased world.
Of course the US govt play a part in the overall horror...