Dark Shadows writers waited one thousand one hundred and sixty-two episodes before they gave a character the titular line.  Inexplicably, he's not even one of the core cast.  From Dark Shadows episode 1162.

"If I had any feelings left, I might pity you."  From Dark Shadows episode 448.

The weather following people's moods is as good an explanation as meteorologists have come up with.  From Dark Shadows episode 1122.

It takes 1199 episodes, but there's one day in which Dark Shadows' Collinwood mansion is not haunted or troubled.  (Second still from episode 9.)

Relics of the Anti-Saints ... a book so diabolical that it's known only in the world of Dark Shadows.  From episode 1118.

Neither of these books exists outside the world of Dark Shadows.  A Treatise of White Witches and Study of the Druids' Use of the Supernatural.  From episode 1122.

"What frightens me is the terrible feeling it's going to happen to us again.  Some incredible horror that none of us knows anything about yet."  From Dark Shadows episode 1118.

How can a long-running horror-themed TV series keep topping itself?  It must address the most existential angst of all: nothingness.  Though Seinfeld touted itself as the first show about nothing, decades earlier Dark Shadows boldly dedicated hundreds of episodes to spine-chilling nihility. 

Perhaps it all started with a memo, that an empty envelope is just as good as a letter:

Great news: your astral self in the future cannot be killed.  From Dark Shadows episode 849.

"We'll deal with your mental aberrations later."  From Dark Shadows episode 531.

"Maybe if I just sit down and don't move."  From Dark Shadows episode 1067.

A rather dubious statement: "Music is seldom used to frighten."  From Dark Shadows episode 1063.

To date, the phrase "weary of footnotes" is a Googlewhack  From Dark Shadows episode 299.

"Ghosts that draw tight fingers around the present."  From Dark Shadows episode 13.

"We are a family born to tragedy.  We seem somehow to invite it and then thrive on it.  What's wrong with us?"  From Dark Shadows episode 1118.

From Dark Shadows episode 1123.

"There are signs of astral disturbances upstairs."  From Dark Shadows episode 648.

From Dark Shadows episode 1075.

"What are we going to tell them?  That they are going to die and they are going to come back as some sort of mysterious ghost to haunt Collinwood?"  From Dark Shadows episode 1075.

A hint of actor fatigue on the long-running Dark Shadows: "It keeps happening over and over again.  Where will it end?" (episode 50).