Matt, KDE 3 was mentioned as it was the first desktop environment I used with Linux. I was gobsmacked that I could split my activities between several screens. 1 for software development, 2 for emails, 3 for documentation, 4 for el Reg etc etc
I'm aware that there are 3rd party utilties/hacks but if you are in a mega-corp environment then it's doubtfull you would be able to install them and most domestic non-power users probably wouldn't even be aware of the concept.
Ken, I'm shocked that you turn it off! But each to his own way of working