I take the Shanghai metro a lot. While on the subway they have different TV programs, at the moment usually just the recap of the Shanghai expo of the previous day. On the weekend though I have found they have a program I like to call "Shanghai's most devious Criminals"
The show features a police man and actual CCTV footage of criminals stealing or doing some sort of con. The con in the picture is an old man crossing the street and making an expensive car slowly bump into his partner in crime a bicycle that just happens to be riding next to the car in the blind spot when the old guy walks towards the car. The bicyclist falls down and asks for compensation. The policeman is eventually called and after reviewing the tapes and seeing how these two scam artists worked arrested them for the scam. There was another one 2 weeks ago which had the cop chasing the criminal who ran across a wide 3 lane road and climbed over the median. He was about to get away when a pedestrian saw the cop chasing him, ran after the criminal and tackled him to the crowd, putting the criminal in a headlock until the police could catch up and put the cuffs on him. For a public documentary show it had a bunch of action and a little uneditted violence.
Anyway this use of the Metro TV is quite interesting I thought, it was half instructional on how to spot scams and half (look how we're catching criminals, don't think about trying anything as we have cameras everywhere.)
Much better than the red light -green light of how to get on the subway movies and how not to go after your cell phone after you drop it on the tracks.