I worked at a McDonalds for about an hour in High School... when I saw "McLard" written on the fry oil boxes, I walked out. As far as I know there's still a paycheck for four dollars sitting in their safe...
I had a great job working as a civilian technician in my Air Guard unit, it's still the highest paying job I've ever had, but it was ridiculously stressful. There were incredible union politics issues in the shop - the shop chief had 'retired on the job', and the three guys who were up for his position all thought that the best way to show their 'leadership' was to make my life hell. I remember one occasion when I was standing up on a scaffold, rivet gun in hand, ready to do a simple, apprentice-level patch repair on a KC-135R, and the three of them were standing at the base of the scaffold arguing over the best way for me to do the work.
I used to wake up in the morning, feeling fine, then as soon as I realized that I had to go to work, I'd get a splitting headache.
I quit after less than three months, and it was a good decision (I was too young and politically/socially inexperienced to know how to work at a job like that anyways), but I do miss the pay and benifits...
-Alex