I remember lots of things like this, from the sunos days.

There was a program that would sort of melt your screen.

There was another one that would animate a little character at the bottom who would then push your desktop off the side of the screen.

and there was a way to take all the workstations in the group, and play sounds on them.

So (nearest I can vaguely recall):

  for i in machine1 machine2 machine3 ...
  do
    rsh $i "play applause.au &"
  done

sunos came with sound files for laughter and applause, and it was amusing to have all the machines in the group laugh or applaud like a crowd.

(well it was amusing the first few times anyway...)