A commenter on a recent post points to the availability of a virtual keyboard
—a tiny device that projects a keyboard on a nearby flat surface and watches your keystrokes. Combine that with something like the just announced Samsung Beam
and a desk and adjacent wall, and you have a cell phone sized device with a desktop sized keyboard and screen. No key travel and you may have to use it in the dark, but it would still be quite a gadget.
Googling around, I found a better price
for the keyboard.