I'm with the no flu shot crowd. I'd rather deal with the virus itself and build up the antibodies naturally, then deal with whatever else might be in a flu shot.
But, then again, even when I'm sick, I don't get THAT sick, so I'm never laid up for a week at a time with a flu virus. If I were, I might change my mind.
Now, if a shot for the bird flu comes out, I might get that one because the bird flu is completely different and we have no immunity.