A mad production of a play about madness, Sean Holmes's new Hamlet marks the first time for this most oft-performed tragedy at the Globe's indoor playhouse. Say what you will about a sweary, unbridled staging that is likely to divide opinion, Holmes's take on a text sometimes undertaken as an act of duty certainly isn't dull.Indeed, I laughed out loud when the wonderful Ed Gaughan - the play's resident guitarist making an 11th-hour appearance as the Gravedigger - asks the audience whether we're...