For short-term: fish works well, especially if pressure cooked. Also, dehydrating just about any standard meats will last a really long time. I would also keep a big bag of sealed rice around, as trying to keep it paleo (thus low cal) is a bad survival strategy.
For long-term: I really enjoy that show "Doomsday Preppers", for how idiotic a lot of them are.....apparently, the plan for a lot of people is to build a fortress, store a ton of ammo, and keep enough food to feed them for the next 12 years....this way, once it is realized that you have a lot of things, it will be much becoming of a small army to come and take all of your shit....and also, once the food runs out, which it will, you can just hang out and slowly starve to death.
In THAT kind of situation, whereupon we essentially turn back into the stone age, the only currency will be knowledge. A person that knows how to grow crops, fix engines, hunt and trap, build shelters, make fire, beat you into a pulp and steal your girlfriend, will have an infinite advantage over a hoarder. If anyone's survival plan involves locking themselves inside a house, it is probably preferable to just die.
I will be out with a badass garden though.....and a 50 cal.....and homemade liquor
"They now look to a single and splendid government of an aristocracy, founded on banking institutions, and moneyed incorporations under the guise and cloak of their favored branches of manufactures, commerce and navigation, riding and ruling over the plundered ploughman and beggared yeomanry." - Thomas Jefferson, 1826