A couple of weeks ago, I lamented the fact that there weren't any commercially available external hard drives that simply plug into our PCs and automatically and regularly back up everything. It turns out that such a device has just been developed.
A new company, called Rebit, has created a USB-powered drive that continuously monitors and backs up everything in the PC it's attached to. It's not cheap (
$299 now $219 for 120 gigs), but it's a great way for lazy folks to protect their data without having to send it into cyberspace.