21 Grams is a 2003 American crime thriller film co-produced and directed by Alejandro González Iñárritu starring Sean Penn, Naomi Watts, Charlotte Gainsbourg, Danny Huston, and Benicio Del Toro. The second part of Arriaga's and Iñárritu's "Trilogy of Death", preceded by Amores perros (2000) and followed by Babel (2006).
The film's plot is about the consequences of a tragic hit-and-run accident. Penn plays a critically ill mathematician, Watts plays a grief-stricken mother, and Del Toro plays a born-again Christian ex-convict whose faith is sorely tested in the aftermath of the accident. The three main characters each have "past", "present" and "future" story threads, which are shown as non-linear fragments that punctuate elements of the overall story. English/French.

Babel is a 2006 psychological drama film directed by Alejandro González Iñárritu and portrays interwoven stories taking place in Morocco, Japan, Mexico, and the United States. the film completes Arriaga and Iñárritu's Death Trilogy, following Amores perros (2000) and 21 Grams (2003). Babel contains four main storylines with seemingly unconnected characters. The stories are not told in linear or chronological order. As the movie unfolds, the audience learns how the plots are intertwined. Brad Pitt, Gael Garcia Bernal, Cate Blanchett.