The March (1990)

Though the crew of The March vehemently denied it at the time, they clearly took a lot of inspiration from The Camp Of Saints, a 1973 novel of French writer Jean Raspail. While the movie has arguably some cinematic value, it wouldn't have been memorable from a purely cinematic point of view if it weren't for its subject matter. And in that regard, Raspail's book vastly outshines the The March.