A couple of days ago we recieved a Western Digital external hard drive from New Egg. I set it up to rsync my home backup server and then took it to a secure location. Presto! Offsite backup is born.
As of right now it isn't automated. So I'm stuck lugging the drive back and forth every month. But shortly I'll have it hooked up to a machine which automatically grabs the files. I'm looking into using a RasperryPi