Continuity: When the cop's beeping his horn outside the car as the spiders jump towards him, he's glaring at the house until the shot of the spider landing on his roof, when he's staring fixedly ahead (not at a spider - there aren't any in front of him). Next shot he's glaring at the house again.

Revealing: When the boy runs from the jumping spider he crosses the road, which makes the eighteen wheeler lose control and it jacknifes. You can clearly see a set of tyres are moving with the right direction of the truck, and there are a set of tyres sliding.

Continuity: Just after the female sheriff's daughter is attacked by one of the giant spiders there is a scene where the sheriff is holding a double barrel shotgun and hands David Arquette a pump action shotgun. A few seconds later the sheriff has the pump action shotgun and David Arquette has the double barrel shotgun.