Algo habrán hecho (por la historia argentina) (in Spanish, "They must have done something (for the history of Argentina)) is a documentary film for television 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 (as well as Eduardo de la Puente) 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.