On the Beach is a pretty good movie, but an
excellent book. One of my favorite pieces of apocalyptic literature; on a more intimate, human scale. There was a movie in the 1980s with a somewhat similar perspective on The End. I can't recall the title (but I will, I will...).
EDIT. tee-hee. got it. It was called
Testament http://www.imdb.com/title/tt0086429/