I remember seeing Quake ported to the CAVE environment and demonstrated on an Onyx (well actually an Origin with reality engines) with a 3-wall and floor projection room...
Near Y2K, as development slowed, several of the hands-on QA teams were found to be astonishingly good at Quake. Later, as labs high and low were decommissioned, a couple of sysadmins consolidated equipment and absolutely dominated the SETI at Home rankings for many months, and likely the PG&E [1] rankings as well.
[1] Pacific Gas and Electric, a California utility company