QOTD: How do you backup?

How do you backup your digital data and do you back up all of it? I am talking about ‘all’ of your digital data- mobile and fixed computer content. I tend to sync my iPhone every 2 days and backup my BlackBerry once a week. I also use Time Machine on my Mac with an external hard drive which is dedicated purely for this purpose. I also backup my BlackBerry SD card once every 2 weeks just to be on the safe side. Anal? Yes. Peace of mind? Yes.