Getting excused from serving on a jury in a criminal proceeding really isn't that difficult. All you have to do is present yourself in a way that leads the court to believe that you could not render a fair and impartial verdict.
Like George Carlin said, “…tell ‘em you can’t wait to be a juror, because you think you’d be really good at it, because you can spot a guilty person (snaps fingers) just like that!” <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />