The Devil and Daniel Johnston [2005] by Jeff Feuerzeig

The Devil and Daniel Johnston is a 2005 documentary film about American musician Daniel Johnston (1961–2019). The film chronicles Johnston's life from childhood up to age 45, with an emphasis on his experiences with bipolar disorder, and how it manifested itself in demonic self-obsession. The film was directed by Jeff Feuerzeig and produced by Henry S. Rosenthal.