AIR
Member
To be honest, I've been thinking of that kind of short film.One of the best and creepiest, yet most underrated end of the world movies was made in New Zealand in the 80s: "The quiet earth". It has no zombies, no big special effects, almost no action or violence, just atmosphere, the interaction between the three only characters, good acting and music. It's really friggin' creepy.
It's on youtube in full length, but since there's some mild nudity in the movie and I'm not sure about copyright infringement with full movies on youtube I won't link it here. But I can't keep you from looking for it yourself, right?