Algo habrán hecho is a documentary television series that narrates the history of Argentina. It was created by the Argentine historian Felipe Pigna, who acted as presenter. In the first two seasons Mario Pergolini was a co-presenter of it, but after giving up on all works on television his role in the documentary was taken by Juan Di Natale. Di Natale and Pergolini were by that time co-presenters of the talk show Caiga quien caiga. Di Natale pointed that he was not meant to act as if he was Pergolini, but the script writers wrote instead the scripts based on his own personality.