When the lights go out.
Actors from the new NBC science fiction TV series Revolution talk about what they would do if modern Earth lost all power and we went back to the dark ages. Hmmm. Buy guns. Lots and LOTS of guns. And tinned food. And a horse. And a good collection of paper books. And kiss your Kindle/iTunes collection goodbye. Oh, and avoid the cannibals and crazy survivalists. And make friends with some preppers.