On the Beach
Following the atomic destruction left by the wake of World War III, a group of survivors aboard an American submarine set out to investigate where mankind can begin again.
From the synopsis, you'd be forgiven for expecting a much more interesting film. This is very much talking heads and preachy prophecy rather than envisaging any physical action.
Still, it was an important film at the time of its original release and remains one of the first doomsday movies.
Fred Astaire, away from the song-and-dance roles which made him a household name, delivers the finest performance in the ensemble piece.