Cyprus is not like the U.S.. When the end comes there, the Euro will still exist and, you're right, a stash of Euros will be valuable.
But if the collapse comes to America, a wad of dollars will be worthless.
That is true. If the dollar collapses and they try to fix things by hyperinflating, or devaluing the dollar, then yes, holding cash is the last thing you want. However, I think that point is still a ways off. For one thing, Japan and now Europe are back in crisis mode, and China may not be too far behind. We are looking good by comparison, and so there are a lot of people around the world who will be trying to put money here. They are already buying up our real estate, Japanese companies are buying assets here, they are buying are markets. This makes the dollar more valuable. Gold should not be doing well right now, at least in dollars. Gold priced in Euros might skyrocket, but not in dollars.
Right now dollars are king, until Europe, Japan, and China fall, and they are at the bottom. Then we will fall last, and the dollar goes with it. In the meantime, by having valuable dollars, you will be able to buy other assets cheap, because they are falling against the dollar