It is obvious that some of the work of Dario Fo is criticized for the bold, sometimes even arrogant, statement that it makes about popular culture and the right that all people have to the "other side of the story", so to speak. This dedication to counter culture and information combines in his theatre with one of the greatest mimic talents of our century. However, this unbeatable combination, even in times of rising fortune for populism, can only give a partial account for the undisputed success of his theatre in Europe, Canada and parts of Latin America. Some of it must come from his research into medieval forms of popular entertainment staged by the so-called giullari (French: jongleurs; Spanish: juglare).