I love the comments..
I must say it's very amusing to read comments from people "oh, but it works badly" or "oh, but I won't try if OO doesn't do x or y" (I'll get to the Linux thing later).
Let me give you a hint: Openoffice.org is FREE. As in: you can try it, for as long as you want, without paying a fee - ever. No problems with limited expiry trials, no problem with spending money on licenses before you're even able to work out if It Works For You - nada. Ditto for Linux. Try before you open your mouth, and, even more importantly, be serious about it. You didn't get used to the new version of Office or Windows over lunch, neither should you demand this to be the case with Linux.
As for the "Linux is harder/more expensive (etc)" - most of the comments clearly are hearsay or regurgitated FUD rather than based on real live trials and proper TCO calculations.
There is no black and white answer, but both the usability argument and the TCO part is edging towards Linux in a big way, but not for the obvious cost reasons: it's more stable usability. People talking about the need to retrain for Linux appear to have a blind spot for the retraining required for every new version of Windows, and every new version of Office (MS tends to casually omit this little but significant detail). The alleged gains in productivity are never really offset against the loss of productivity trying to get used to the new product in the first place. The "where has that option gone" problem had gone so bad in Vista they had to implement a -time consuming- search function..
If you take into account that the Linux GUI (KDE/GNOME) as well as that of OpenOffice have very FEW changes from one version to the next (because they're based on improvement rather than driven by sales), the "training" part of the TCO equation becomes suddenly a lot more interesting.
And I haven't even talked about the costs of license management (which is not just manpower but also insurance in case FAST/BSA pay you a visit) and anti-virus software - all that crap you need to engage in because Redmond cannot release a new OS without deficiences (or you'd not buy the next version as they're mainly selling hope). New virus here, new trojan there - always a nervous time for sys admins. Not with Linux, the few attacks there are tend to be limited in scope, and not quite on the "it will nuke your system/network" level as we've seen frequently with Windows. That's why they have to be creative with figures - a Windows Update is seen as one (1) fix instead of the series that it really represents.
Lastly, it depends on how confidential your information is, but we have now formally banned the use of Windows on any system handling client information or financial transactions. There is too little control over what does what in Windows, in Linux we can examine every service and even look at the code and compile from scratch if we're really worried. No such luck with Windows.
BTW, if you're really worried about your gran/friend needing support, get them a Mac. Still safer, and NeoOffice works. Just keep them off Vista.
To bring in the Paris Hilton angle, anyone who trusts Microsoft to act in their interest instead of Redmonds is about as bright as Paris in her choice of boyfriends. But at least the side effects of the latter are more interesting, it beats a vid of a sweaty Ballmer yelling "developers, developers, developers"..
Coat, hat (it's -8C here)..