Threads - if its the movie I thnk you're talking about, its when a nuke explodes above Sheffield. It follows the fate of one pregnant woman as she and others struggle to survive the aftermath. Graphic is definitely the word from what I remember.

We studied it as part of my English GCSE..... and it certainly made an impression on me. That film combined with the books "Z for Zachariah " and "Children of the Dust", both of which are post-nuclear apocalypse stories, and Macbeth as our Shakespeare play made for a pretty maudlin syllabus. <img src="images/graemlins/grin.gif" alt="" />