I don't think television has hit a lower point than Ghost Hunters, and Crossing Over with John Edward. I understand the stupid thrill some people get when drunk on creepy atmosphere; A shaking camera in night vision mode, panicked voices, background music fit for Silent Hill, and a long and creative "history" to set up the whole titillation. Still, the whole Ghosthunters experience could be replicated by grade school students with cellphone cameras and proper editing. John Edward simply made a small fortune off of cold-reading people, and other fraudulent parlour tricks. Which is, in retrospect, actually an amazing talent. Though not moral talent, and obnoxiously distasteful once you realize he's preying on people's willingness to delude themselves in fervent hope that they may seek absolution from the dead.
The underlying mythology of the ghost is just pathetic. Unlike alien encounters or religious mythologies - with aliens the conclusion you can draw is that we're not alone in the universe and something is interested in us. That makes us special, and the universe more interesting. Religions put the universe into an essentially just framework of predictability. Even if bad things happen, so long as you follow the major social mores of your society you'll be comforted and rewarded even if you should die. With ghost, what is there? Some good fodder for fiction, certainly. Perhaps the titillation and adrenaline-fuelled joy of shrieking in terror knowing full well that you're perfectly safe like in haunted houses and scary movies. But the thought of people, or some part of us that exists after death, just floating about aimlessly for all eternity is... deeply distasteful When the universe dissolves into entropy, do they just exists there in blackness for eternity? At least religions promise liquor, women, and carousing with other valiant dead. Or some variation on that theme.