Marc Musso with Benicio Del Toro on the set of "21 Grams"

Stephen Bridgewater as Private Investigator Justin Donneaud in "21 Grams".

Cillian Murphy at an event for 21 Grams (2003)

Sean Penn, Benicio Del Toro, and Naomi Watts in 21 Grams (2003)

Sean Penn and Naomi Watts in 21 Grams (2003)

Melissa Leo and Eddie Marsan in 21 Grams (2003)

Benicio Del Toro, Melissa Leo, Marc Musso, and Teresa Delgado in 21 Grams (2003)

Alejandro G. Iñárritu in 21 Grams (2003)

Benicio Del Toro and Melissa Leo in 21 Grams (2003)

Rodrigo Prieto and Alejandro G. Iñárritu in 21 Grams (2003)

Sean Penn and Charlotte Gainsbourg in 21 Grams (2003)

Alejandro G. Iñárritu and Naomi Watts in 21 Grams (2003)

Clea DuVall and Naomi Watts in 21 Grams (2003)

Sean Penn and Alejandro G. Iñárritu in 21 Grams (2003)

Sean Penn, Benicio Del Toro, Alejandro G. Iñárritu, Melissa Leo, and Naomi Watts in 21 Grams (2003)