I was reading somewhere that a phenomonal percentage of people have worked in McDonalds at some point in their life. I guess it's an easy job to 'learn how to work' in.
My first job was doing clerical and computer work at a small computer company near my home. I remember the storage devices they used were these giant tapes that were bigger than a dinner plate around. You would have to hit a button on the computer, have it "eject" one of these and then put in a new one when you wanted to switch projects.