Dawn of the Dead (the original)
http://www.imdb.com/title/tt0077402/
A group of survivors of a devastating zombie attack hold themselves up in a mall for survival. Theres only one problem they have....someone else wants to take it.
It's a real classic and any zombie fan should own this on DVD. I know I do.
Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb
http://www.imdb.com/title/tt0057012/
Another all time classic. Suspenseful nuclear thriller. Stars the sexual peter sellers. whats not to love?