20. 'Ghost Hunters' (2004-Present)
Okay, so as scientists the crew from TAPS (The Atlantic Paranormal Society) won't be winning the Nobel Prize anytime soon. As horror-television visionaries, though? Give Jason Hawes, Grant Wilson and company any trophy they want. Knowingly or not, this dogged crew of pro-am paranormal investigators has made spooky small-screen magic out of their ad-hoc explorations of haunted houses by tapping into a key component of every successful scary story: the willingness of the audience to believe. It's Blair Witch or Paranormal Activity after being given a reality-TV makeover. Jumping at shadows has never been so much fun.