I worked at a technical college in 2008 and one of my jobs was to supervise classes when teachers were absent.
The Young Adults i supervised would visit one particular room in the library, shut all the blinds, install the Halo demo and play LAN deathmatches on the worst looking software renderer i have ever seen. Perhaps it was just an optiplex AGP card glitching out.
When they were finished, they would open the mice and throw the mouse balls at each other and leave them on the floor.
One day IT found out about this, so they glued shut all the mice. The Young Adults therefore unplugged all the mice and bent all the PS2 pins.
I think about those kids and thier shenanigans a lot.
Best demo is Terra Incognita/Net Yaroze because at some point I distinctly remember that these were ‘real’ games, and i was instantly radicalised.