Doom

Dwayne Johnson was offered the lead role of John Grimm but chose the role of Sarge because he thought it was more interesting.

When Sarge asks Reaper how much ammo he has left, Reaper replies that he has "half a clip." The correct term is magazine (usually abbreviated to "mag.") Any Marine would know the difference between a clip and magazine. Although this may be the case in reality, the Doom games refer to small quantities of bullets as clips; (e.g. 'picked up a clip') calling it a clip in the movie was probably intentional in order to be more consistent with the game.

In the opening Universal logo, the Earth is replaced with the planet Mars.

The unrated version of Doom contains scenes not in the original film, including:

• Portland and The Kid finding Dr. Tallman in a locker room
• Sarge briefing the team on the helicopter
• Kid shooting steaming pipes
• What happens to Pinky's legs
• An extended version of the first-person shooter scene
• Sam and Duke in the Med Lab
• Portland reloading his gun in the restroom In addition, the unrated version also contains two extra bonus features:
• a look at how the first-person shooter scene was created and the scene itself
• some hints and tips for beginners on the Doom 3 game.

Featured in At the Movies: The Worst Films of 2005 (2006)