This is very visible in the DVD version, may be less noticeable in grainy old VHS copies. In the scene when Spider and Burt break through the fence driving the police car, they get into the clear and come across a flood of zombies running towards the car. Rather than running the wall of zombies over, Burt decides to slam the cop car into reverse, watch closely, as the car reverses you can spot a camera man with camera in hand filming from the back seat of the car. What's even funnier is you can even see the red light of the camera on during the whole sequence, the camera man also nearly drops the camera due to the car motion.