Tim Burton is making a movie based off of this show with Johnny Depp.
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"Dark Shadows is a gothic soap opera that originally aired weekdays on the ABC television network, from June 27, 1966 to April 2, 1971. The show was created by Dan Curtis, who tells of a dream he had in which a girl takes a long train ride to visit a large mansion. The story "bible," which was written by Art Wallace, does not mention any supernatural elements. It was considered[by whom?] daring (and unprecedented in daytime television) when ghosts were introduced about six months after it began.
The series became hugely popular when, a year into its run, vampire Barnabas Collins, played by Jonathan Frid, appeared. In addition to vampires, Dark Shadows featured werewolves, ghosts, zombies, man-made monsters, witches, warlocks, time travel (both into the past and into the future), and a parallel universe. A small company of actors each played many roles and, as actors came and went, some characters were played by several actors. Major writers in addition to Art Wallace included Malcolm Marmorstein, who created the character of Barnabas Collins, Sam Hall, Gordon Russell, and Violet Welles."
http://en.wikipedia.org/wiki/Dark_Shadows