What Rob wants is a personal computing environment that isn't restricted to a singular personal computer. I use plan 9 and the concept of your ENTIRE computing environment being portable across any number of machines, at the OS level, is priceless.
After 15 years of computing I was shocked when I realized that Sun machines kept all their data locally, ran sendmail etc. It seemed like such a huge step backwards in time.
Andrew [1], not sure it was usable in 1984 though.
You use it for your daily work? Is this possible?
I highly recommend giving it a look (I highly recommend 9front), and read nemo's intro.