When Sam and Pete examine the crime scene, the position of the body is outlined in tape. While this may have been done in much earlier times, it was usually to allow the press to take photos. Today, using chalk or tape to outline the body would contaminate the scene.
In the beginning, a caution street sign has the speed in KM/H on it, instead of MPH as it would appear in the US.
Although set in Colorado Springs, Sam and Pete get lunch at Mr. Tube Steak, a food service in Vancouver, Canada where the show is filmed.