Having Unix display X windows elsewhere

You're sitting at computer me.university.edu, and want the computer you.university.edu to display graphics on computer me.university.edu. If me.university.edu is a unix machine you tell it

xhost +

Next you telnet to you.university.edu, and you type there

export DISPLAY=me.university.edu:0

Now the computer you should happily display graphics on the computer me screen.