This just in from Nic Duquette, who saw one of the pieces on Margins out this week.
"OpenOffice.org comes with default margins of 0.79" on each side. I believe it's the very distant number-two office suite."
I have not tried OpenOffice.org yet (I've got my hands full dealing with the recent switch I made from PC to Mac!), so I can't advise on how well the software works. But given the software's progressive nature, it sounds like it's definitely worth checking it out for those of you undeclared software peeps.