nothing really beats ms word! (openoffice just isn't as familiar to me)
OpenOffice is almost an exact clone of Word*. =) Right down to the menus and that weird little find widget at the bottom of the scrollbar.
Heck, there's even a stupid paperclip, except it's a stupid lightbulb with a flotation device instead. =P And it's a lot less annoying, from what I've seen so far.
*Of the 97/2000-era, at least; MS did some wacky things to later versions.