This daring film sparked a national dialog that led to the Truman Administration’s controversial “Thoughtfulness Index.” After a few cranky kids explain why they can’t be bothered with thoughtfulness, we spend way too much time with a disgustingly perfect family who are so darn thoughtful you’ll hurl. Their orgy of consideration and helpfulness escalates in bloody one-upmanship until each of them lies dead. Just foolin’. Nothing really happens.