I caught a film that met my need for disaster and chilling feelings: Threads.
Threads was aired as a television play on the BBC in 1984, at the height of the cold war. It’s one of the only long-format films to display in depth the effects of a nuclear winter on society. Some of the images are pretty disturbing and I was pretty surprised that they showed it on TV, but then again in Britain censorship isn’t like it is here. I was sufficiently chilled and was pretty afraid I’d have nightmares. The quality of the transfer is poor but the point definitely gets across. I recommend it.