I have, it was an eye opener. On the one case I was juror, it was plain as day that the fella was innocent, but one juror wouldn't have it and some of the other jurors were just clueless and went with the flow. Luckily the juror who was sure he was guilty, eventually changed his mind and justice was done. I think the jury system in theory is a good one, but in practice has it's faults.