Shown recently on BBC Four, as usual when they visit NASA Linux/UNIX dominates with a few Macs and an occasional Windows box.
At about 23 minutes there's a simple Dell dual-monitor setup...

...running what looks like Red Hat possibly, judging by the theme...
.

At 23 minutes we see what looks to me like a Debian desktop

Then at 36:56 there's Andy Rivkin's (John Hopkins Applied Physics Laboratory) nice dual monitor Linux desktop (and a Macbook):


You can still at the time of writing watch the programme on BBC iPlayer
here.