"Tulip Staircase" is a wonderful paranormal photograph. The one taken of a RAF mechanic unit, with the head and face of a very recently deceased unit member in it is also a good one (he had been decapitated a few days prior to the photograph). It is these photographs, the "unintentional ghost photos" that I am most interested in (there was no ghost/apparition prior to the photo being taken, it merely appeared on film). Orb photographs...not so much. Too many of them are merely dust. "Shadow people" ones are interesting too, but are far too easy to fake/manipulate.
Not sure if anyone watches "Ghost Adventures" with Zak Bagans, but if so, remain skeptical of much of it. The show is an attention/ratings grabber, and uses quite a deal of sensationalism (Bobby Mackey's Bar being a great example, as the beheading that took place "where the bar stands now" is false, it took place in a field a good distance from the modern bar, however the show continues to perpetuate the myth rather than the reality).