Good Idea:  Serving duty as a juror—as required!  We have discussed this: Jury Duty: Served! and Jury Duty: Reprised. 

Bad Idea: Ignoring the Judge’s instructions while serving.  Yep, discussed this too: Juror Twittering Did Not Affect Jury Verdict and Tech Interference with Juries.

Even Worse: Asking the Defendant Doctor for medical advice—during the trial!