DH has explained to me what happens... jury duty around here isn't just one case all the time... they'll make you sit there all day and listen to dozens in some cases.
Bonus points for the time that he was chosen for a single trial, and halfway through they settled it so it didn't count as his Jury Duty for the Year and he was called AGAIN. What the heck is that about?
Guess I could go on and on about my BIL, my Sister, Mom, rant about the robberies at FIL's business and nothing being done (refuse to even take prints for cripe's sake)... actually for that matter DH could mention all that... but he's the quiet sort, hates controversy... not likely to speak up unless they ask him directly... and since there aren't any convictions for those... well that's all they care about really.
I know, without a doubt, that I would NOT be a fair juror... I KNOW I am biased... sometimes one way sometimes another, but biased nonetheless... that alone should be reason enough to be dismissed, but the fact is that the lawyers WANT bias, they're just specific about it. As DarkMatter said, they look for people with specific biases that they can manipulate to get the verdict they want. Both sides do this. In a malpractice suit the one's suing avoid doctor's wives at all costs, but the defense loves them... Or in rape case, the criminal side will try their best to get as few women on the board as they can... while the prosecution wants to be able to scare them into a guilty verdict. That is the major flaw with our system. Our own lives make us open to being manipulated.
Ohhh did anyone read Runaway Jury, Grisham? They made a movie, John Cusack, did a sorta okay job though they changed the central theme... the book is WAY better... but it's an interesting little view into juries... fiction, but still interesting.
Of course, then there's A Time To Kill... severe prejudice to fight against in that one... not just the jury but the whole area too. Again, fiction, but not an entirely false glimpse either.