Thought I'd just use this post as a thinly veiled shameless plug for my Sourceforge Project, OOoSVN:
http://sourceforge.net/projects/ooosvn
Quite a number of Nexuiz players seem to run 'nix which also means a fair number will be running OpenOffice.org so this might be of interest to a fair number of you.
What it does is provide a set of macros and shell scripts which when activated through an 'SVN' menu provide a tool to check ODF and SX* files into a proper version control system. AFAIK this is the first project to provide such functionality on any platform.
What this means:
Every file you ever make in OOo can be inclemently backup up meaning that you can access any version of any document you ever save. Accidentally deleting, overwriting or corrupting a file is no longer a problem.
It's still beta, more to come.