Books
Crisis Preparedness Handbook: A Comprehensive Guide to Home Storage and Physical Survival by Jack A. Spigarelli
Preparedness Now!: An Emergency Survival Guide (Expanded and Revised Edition) by Aton Edwards
Fiction
Vandenberg by Oliver Lange (Invasion scenario. Note: It was later republished under the title: Defiance: An American Novel)
Movies
Amazing Grace (Biography of the abolitionist William Wilberforce)
The Thing (Has some horrific scenes, but it is thought-provoking. NOT for kids!)