After the success of '' Amores Perros '' , Iñárritu and Arriaga revisited the intersected-stories structure of '' Amores perros '' in Iñárritu 's second feature film , '' 21 Grams '' ( 2003 ) . The film starred Benicio del Toro , Naomi Watts and Sean Penn . It was selected to compete for the Golden Lion at the Venice Film Festival , where Penn received the Volpi Cup for Best Actor . At the 76th Academy Awards , Del Toro and Watts received nominations for their performances
76th Academy Awards
76th Academy Awards
Alejandro González Iñárritu