I work in a UNIX shop ... and I adore any GUI that reduces my command line time. We've played around with a couple of options for replacing our SGIs. SGI hasn't built anything for the desktop that's worth buying in a decade. Flirting with Hummingbird for PC, LINUX, and OSX. Now if we can just get management to make a decision.
Silly...management doesn't MAKE decisions. They just hold lots n' lots of meetings to discuss the possibility of making a decision someday. :-P