They filmed a movie here a few years ago called "Pass the Ammo".
Our C language instructer worked for ATT who provided the computers for some scenes.
He wrote a program that was basicly a slide show for a alarm system. You press space bar, it moved the "alarm" on the screen. The move made it look like as alarms went off, the computer reported it.
And there was a room full of printers running. Well, actually, they had a bunch of people lie under the printers and pull the paper through by hand. Then they added sound effects later to make it look live.
I still have a copy of that program somewhere