Please, unless you're over 90, or have some major health issues, don't bother.
Personal plea, from me to you, don't be so paranoid as to "need" a flu vaccination.
It might make you sick - it's an active virus that they're injecting into you.
More importantly, it might make you too reassured - those things are based upon the particular strain of the flu which "they" think is going to be the biggie this year.
People, please trust in your own immune systems. Unless there's dire circumstances, usually they're enough to combat the issue.
PS: Rodney Dangerfield? Poor guy. Bad jokes, but still.. poor guy.