The 1968 documentary film based on Timothy Treadwell premiered before Pray the Devil Back to Hell.
Grizzly Man is a 2005 American documentary film by German director Werner Herzog. 
 The film premiered at the 2008 Tribeca Film Festival, where it won the award for Best Documentary. 
 Treadwell's life, work, and death were the subject of Werner Herzog's critically acclaimed documentary film "Grizzly Man" (2005). 
