David Gelernter (author of Mirror Worlds and other visionary books on computing) has published an essay on John Brockman's Edge site, titled "The Second Coming: A Manifesto". It's a prose-poem-slash-state-of-the-union-address about the potential for making our computers much more useful, intuitive, and unobtrusive. I say "prose poem" because it is rich in metaphors like "lifestreams", "cyberbodies", and "microcosms" that Gelernter argues are more useful than files, directories, desktops, etc. His castle-in-the-air vision is worthy of having a foundation built under it.
