Then it slides photos of these guys, presumably Perq employees, around.
 

A few more text/window examples. And then a tiny star ship Enterprise blows up a window.

An example of a file tree, and some sample cursors.

In the last bit of this large demo, this character at the bottom sets off a bomb and the entire screen flashes inverted black/white.

Finally the command "bye" logs out of Perq OS - On a real Perq "bye" with the /WAIT or /OFF  parameters will park the hard drive heads or automatically power down the machine, respectively.