Grams: 21

A math professor with a failing heart who receives a transplant.

Directed in a cinéma vérité style, the movie uses hand-held cameras, high-contrast lighting, and a distinct color palette to differentiate time periods, enhancing the intense, documentary-like feel. 21 Grams

A recovering addict whose life is shattered by the loss of her husband and children in a car accident. A math professor with a failing heart who