|Dogma (1999) [Bartleby]: Head explodes after being exposed to the full power of the voice of God (Alanis Morissette).
Paycheck (2003) [Michael Jennings]: Shot to death by a stray bullet, in a vision of the future; Ben later manages to prevent this from coming about (causing the bullet to hit Aaron Eckhart instead). (Thanks to Mathew)
Hollywoodland (2006) [George Reeves]: Shot in the head in his bedroom; his body is shown afterwards while the police investigate, then again in the morgue later on when Adrien Brody examines him. Three different versions of the shooting are depicted at different points as Adrien speculates about what happened: (1) Ben is accidentally shot by Robin Tunney when the gun goes off during an argument. (2) He is shot by one of Bob Hoskins' thugs. (3) He commits suicide by shooting himself (off-camera). The movie leaves it up to the viewer to decide which is the actual explanation.
Smokin' Aces (2007) [Jack Dupree]: Shot repeatedly in the chest, along with Peter Berg and Martin Henderson (who survives the shooting), by Chris Pine and Kevin Durand. (Thanks to ND, BK, and JOK)