This is something that everyone should do, so I'm linking it here and will add it to the IT Guy Toolkit sticky.
We've seen plenty of crazy ways to keep your precious data safe. Some people burn a few tons of DVDs, others make a montly habit of swapping hard drives into a safe location. In today's How-To we'll show you how to automatically keep your data backed up from your computer with ssh and rsync. Feel that? That's our warm comfy safe-data blankie. Check it out.