The last few times I got called, it was just a morning of listening to political speeches and lectures from the judge on how we shouldn't weasel out, then a parade of people weaseling out, then an afternoon wasted in an upper room waiting to see if we were going to get empaneled. Usually you get sent home and told to call an auto-number nightly to see if you are needed next day. It's all about wasting hundreds of peoples' time while the lawyers play chicken and see who can hold off making a deal until right before something goes to trial.

If you do get recruited for a panel, you can let them know you're biased in some way, especially if you really are. I'm sure it's different in your county, but hopefully it will be a brief disruption, unless you get put on some drawn out trial from hell.