Dave Eggers, hipster author extraordinaire, wrote a book about a story from Katrina that i never heard. Abdulrahman Zeitoun stayed in New Orleans during the hurricane to protect his house and the properties he oversees and managed to aid and rescue ten of his neighbors in the 5 days after the storm by going around in an old canoe. Then he was arrested by the National Guard without being charged for anything and detained for something like 20 days on the suspicion of terrorism. Here is an article that goes into it briefly.
Eggers spent three years interviewing Zeitoun and his family and has written a book about it, sounds pretty cool. Supposedly an animated movie is being made out of it. If it's as striking as the cover it should be awesome.