I watch them all......I also write critiques for two different sources on the shows, primarily on the investigative techniques.
Here is the sad but true facts, all of the shows including Ghost Hunters have had instances of faking evidence and/or doing dramatic scene re-shoots.
Ghost Hunters caved into the pressure to have more evidence show up, since they have been outed on youtube and other former cast members did tell-all stories, they have reverted back to their original formula and you now have shows where they are doing more debunking and that there are some shows where the evidence just isn't there.
Ghost Lab....they claim to be scientific, not so much, LOL
The Dead files has shown some promise, however I'm concerned that the staff "feeds" the pyschic girl hints to get her to catch on to what they are trying to extract, for example in the first one I saw the guy who did the murder was in prison and she kept saying that there was an evil spirit and didn't change her story until the assistant kept asking and getting more pointed "is the person you are channeling dead or alive", finally she said " I think he may be alive" and the assistant, obviously relieved said, "maybe so"......
the problem with all of these shows is:
First.) there is no "control shot" i.e. camera outside the filming lines where they can film and watch the entire production including the film crew/staff. Also while they do use "time stamps" we don't have any access to verify that the scenes shot and the evidence extracted take place as shown due to lack of the control shots.
Second.) The investigative time frame is really too small, why just 8-9 hours? The best method is to use time lapse over several days. Also why at night, other than it is dramatic....if you notice most stories and occurances of the paranormal happen to people during the day......there is no rule that the ghost can only play at night.
Third.) Selective sampling.....they expect you to accept evidence of paranormal every time they get a "positive" response to "make a noise" i.e. a knock, etc.........with that assumption then you must accept that every time that they don't get a response is a "negative" or a "fail", and therefore when compared, the positive responses are usually minimal to the overall sample.
Fourth.) The use of scientific equipment for things it was not designed for and then claim that they are using sciencetific techniques......the most obvious misuse is of the thermal camera's......Ghosts by all descriptions are "cold" or " are less than air".......therefore, in most cases they should show up as colder, not hotter than the those items around them, and also they more than likely would not have a temperature at all, and therefore not be detectable by the camera.
I could go on and on..............but in summary most of the shows have been corrupted by producers and the need for ratings/drama. I do beleive many of these guys people have good intentions.
I also believe there is some things that are paranormal and are difficult to explain, that is why I hate to see the process all fucked up on some of these shows......
anybody else got ideas?