The Day the Earth Stood Still
Take a step back from the hectic pace of many modern films. Don't be mistaken there is plot but you're not going to be swept along by over reliance on special effects. An alien comes to Earth spreading a message of peace but you know how people are. Most of the film is an exploration of the rights and wrongs of human nature. I used to avoid black & white films, they were boring. Maybe some of them are but there are classics out there as well if you're willing to take the chance.
