A few resourceful people have begun to make a Linux distro that is modeled after the Linux distro Paranoid Linux, envisioned in Cory Doctorow's excellent novel Little Brother. The Alpha build was released on the 11th of October. It is still in a very Alpha state but it is a start to a very good idea. Check it out at ParanoidLinux.org.
I think that this distro is a great idea. I am thinking that with oslrd or even Netsukuku this distribution could easily create an anonymous network seperated from the Internet. The distro is based on Ubuntu so I can even see a stripped down version that could run on a Linksys WRT54G that automatically create a p2p network with adjacent routers running the custom firmware. The possibilities are endless.