Your normal sense of depth perception is useless for
objects that are extremely far away such as mountains or the moon.
Instead you judge roughly how relatively far away it is by
the way it moves in the distance as you do.
Thus with litle effort you could simulate things at a great
distance. Take for example a room where you have a computer
track position of your head within it, then display across the walls of the room the stars and a well
rendered image of the moon and earth properly such that
you could simulate being in orbit to some laughably
simple degree. But if it worked even just half decently
it could be quite awe inspiring.
Would be need to try.

Read Snow Crash. Very good book.

Yeah Rachel! Kick ass article on Salon. Congrats.