For the most part do not listen to the people who say, "make racial slurs etc." Unless the judge thinks you are convincing on the subject he will nail you with contempt of court, if he thinks you are convincing there is a good chance he wont let you go until the end just to piss you off.
You sound like you've actually been through the process. I wonder how many posting here have? All this unrealistic TV drama talk... it doesn't happen. This is my 32 years of experience with being summoned in the US...
The majority of summonses are for telephone standby duties, and last one week. You simply call each evening to find out if you must appear at court the next day, and that rarely happens. It's a simplistic machine, no live people. Often, the robo-voice tells you by Wednesday that you no longer need call. That's it, all done.
The majority of folks called to
actually appear are released that same day. Once they have enough potentials, they begin allowing the more 'flaky' excuses. Our group (about 150 people) had, among others, one 86yo vet that was excused & we gave him a standing ovation, too.
The majority of cases are one day civil trials that begin & end that very day. Chances are high that you'll be finished & home in time for supper.
Long term cases, such as criminal, are quite rare.
The Q&A sorting:
If you're actually selected to serve, you get a short questionnaire collected by a bored clerk.
If you 'pass' that, there's another questionnaire, designed to weed through potentials for that particular type of trial (civil/criminal), collected by another bored clerk.
If you pass that, there's a vetting session that includes all that case's potential jurors (30-ish), the Judge, Lawyers, and their clients. They expand on your responses to questionnaire #2, they ask, you answer. Hysterics and long winded monologues are not allowed, and may cost you dearly (read the warnings on the questionnaires!). It's mostly Yes : No replies.
If you pass that, you have an opportunity to personally speak to the Judge concerning serving. Any issues that weren't already covered in questionnaire #1 and #2 can then be discussed.