I didn't have nearly as bad of a reaction to the H1N1 shot - though I probably didn't need since I suspect I had the swine flu last summer before the vaccine came out. Some guy in my town died of the swine flu around the same time, and I was horribly sick for three weeks and antibiotics would not get rid of it. I kept forcing myself to try to go to work and kept having to go home. I was so sick at some points all I could do was sleep or stare at the wall. I didn't even want to watch tv or read. I think by the third week I believed I was, in fact, dying.
So that's why I got the vaccines last year. Of course, I was also living in a much more humid/cold climate where pneumonia is more of a problem with the general population than it would be in SoCal, so I think I'll skip it this year.