Maybe they could claim the jury was biased and appeal their verdict? I don't know. I honestly don't see how half of them being Michael Jackson fans could benefit the defence, especially considering the piles of damning evidence Murray is currently drowning in.
With that said, we've got some pretty good jurors, among them a college professor, a management firm partner, a paralegal, a technical director, and someone with a BA in biochemistry. So, we've got a good number of formally educated/professional people on the jury.