Actor Mike Kovac slept with his western pistol under his pillow during the entire shooting schedule.
When we first encounter the zombies at the logging site, a tarp is visible in the background that reads "Thumm Logging." This is a reference to Bill Thumm, mentor and teacher to the creators of True Hype Productions Inc.
When Rob Grant's character exits the classroom after the alarm goes off, a poster titled "Refuge" is visible in the background. This is a poster for a stage production that actor Jesse Wheeler was involved in before shooting. A corporate logo had to be covered up in the shot, so Jesse Wheeler went to his car and produced the poster that had been laying on the floor for the past few months. Jesse Wheeler is visible on the right hand side of the poster.
When Mike accidentally shoots at Chris on the street a car is visible on the left of the screen with a woman's legs laying outside the opened driver-side door. These are the legs of Laura Moxon, head of the make-up department.
One of the zombies that Mike Valentine shoots from the bathroom window is a small girl holding a gardening trowel. This is a reference to the character 'Karen Cooper' from Night of the Living Dead (1968).