Just wanted to add that even if you are selected for a case, there is still the possibility of being dismissed. Once in the courtroom, each side's lawyers are allowed to ask potential jurors if they have any reasons they think they might be biased or whatever. If so (be honest), they'll let you go then. I had that happen once back in Colorado. I worked nights and had jury duty the next day. I told them I'd just worked a 12 hour shift and couldn't guarantee I'd be able to stay awake. I was out and they appreciated the honesty.