Epic Theatre

"Epic Theatre is a dramatic form developed in Germany after World War I by Bertolt Brecht and others, intended to provoke rational thought rather than to create illusion. It presents loosely connected scenes often interrupted by direct addresses to the audience providing analysis, argument, or documentation. Brecht's goal was to use alienating or distancing effects to block the emotional responses of the audience members and force them to think objectively about the play. Actors were instructed to keep a distance between themselves and the characters they portrayed and to emphasise external actions rather than emotions."
http://www.usq.edu.au/artsworx/schoolresources/goodwomanofszechwan/epictheatre