I wouldn't say i am a power user of it so don't have a clue what open office is like.
I just read somewhere that vast quantitys of public service type organisations have gone onto it.
Linked with the fact that most other work is done via web apps i can see that from a bean counters out look a common linux desktop will seem very atractive.
Slight issues with support for a few years but then again we only used to need 20% of the support team than the button clickers needed for the same number if not slightly more machines and triple the number of users. That was on a NIS+ enterprise network.
It only used to take 2 people a week to design a roll out and we would blow down 1500 solaris boxes in one weekend. First time i saw it done i was waiting for mayhem monday morning. Not a peep from the unix users. Just the usual clueless !!!!e from the pc users.