In the HBO low-budget movie "Near Dark", with Adrian Pasdar and Lance Henrikson, a visible mistake is made. In the scene where the cops have the group surrounded at the hotel, and Adrian Pasdar's character makes a break for the van, he is running with a blanket over him to keep the sun off of him, but he is shot by a cop. When the bullets impact him, he jumps, and if you pause and use the frame-by-frame feature of the VCR, you will see in the very lower right hand corner the tube that runs up Adrian Pasdar's shirt to carry the fake blood.