6. The Omen (2006)
In 2006, during production of the Omen remake, director John Moore lost about two days' worth of footage due to a broken camera. Sounds pretty normal, but Moore doesn't see it that way. He attributes the malfunction to an evil spirit, because apparently the broken camera kept displaying the error message "Error 666". When a repairman looked at the camera, he insisted that such an error message number doesn't exist. Cue!
Maybe some spirit was just pissed they were remaking yet another horror remake. It was probably a commentary of sorts on the lack of originality in Hollywood these days; thus, it was a protest! Power to the people!