The Shakespeare Center of Los Angeles will determine at the end of this month whether Hamlet was mentally competent at the time he murdered Polonius.
I've never seen one of these up close, but they've been done before. I'd like to see a transcript, if nothing else:
Defense Attorney : Mr. Hamlet, should you have been in your mother's bedchamber in the first place?
Hamlet : No.
DA : And why not?
Hamlet : The ghost told me not to.
DA : Defense rests.