I use Orbicule's Undercover service, which is much like LoJack, only specifically tailored to Macs. I also back up to an external drive nearly every night (Tha

I use Orbicule's Undercover service, which is much like LoJack, only specifically tailored to Macs. I also back up to an external drive nearly every night (Thanks, Time Machine!), and check my code into source control (SVN or Mercurial) on my VPS.