delorean
delorean is the script I use to backup my notebook. It works a bit like Apple's TimeMachine or rsnapshot, but doesn't need a blockdevice, iSCSI or a directory as destination, instead it uses the good old SSH (with rsync and hardlinks). I run it in an hourly cronjob.
40 * * * * root /usr/local/bin/delorean
Thanks to ionice I don't even realize when it's doing it's job!
Look in the code for the configuration! If you don't understand it, don't use it. (Maybe one day I'll make it easier, but something holds me back from writing more lines of documentation than actual code without getting paid for it)