Zacherley did a lot of things in show business in his long and varied career, including a hit novelty record, "Dinner with Drac," in 1958.
But that itself hints at what he was best known for: He was "the cool ghoul" and essentially invented the TV format of some ghoul or mad scientist or vampire or whatever introducing Grade B (or worse) sci-fi or horror movies, often interrupting the flick with some sort of shtick.
Everbody from Elvira to the Cryptkeeper in Tales from the Crypt to the gang on Mystery Science Theater 3000 to the many such characters and shows on local or public access TV around the country can trace their heritage in some measure to John Zacherley.
And, sigh, another part of my childhood slips away.
RIP, Zach. I'm sure you feel right at home.