10 Obvious Horror Movies Goofs We Can't Believe We Missed The First Time

10. Some Clear Light Assistance - Doom

Before he was the absolute megastar seen wearing pretty much the same outfit in every movie and leading many a successful blockbuster, Dwayne Johnson found himself starring in the dud that was 2005's big-screen adaptation of the horror/sci-fi video game Doom.

While largely being a bit of disappointment, there's still a bit of fun to be had in this demonic ride. For example, the pulsating first-person shooter sequence in Andrzej Bartkowiak's movie is an absolute blast, and the autopsy moments are also wonderfully gruesome as Rosamund Pike's Dr. Samantha Grim cuts away at a creature.

It's during one of those latter scenes when viewers' eyes are locked on Sam getting stuck into a carcass that something quite hilarious goes down.

To the right of the screen, as the lights flicker mid-autopsy, you can actually see a member of the crew literally lending a hand by turning a switch on and off.

The camera pans away from the invading arm just quickly enough for the assistance to be missed during a first viewing. But if you choose to revisit this flop of a mission to Mars, and pull your eyes away from the surgical procedure for a second, it's just about impossible to miss a silly - though rather helpful - goof that likely should've been blown to pieces long before it made it to screens.