Scary Credits and Music
Hitchcock's TV theme was rather humorous and jaunty...not terribly scary at all.
The opening bars of "The Twlight Zone" became famous for all time -- eerie, modern, nerve-wracking (and scary if you were say, under 10 and the show came on in another room.)
The Outer Limits (circa 1964) used an electronic, buzzing, static-ridden soundtrack and heavy music to provide a "SciFi" aura with a "factual basis" to its monsters.
But good ol' Boris Karloff got a fine opening to his "Thriller" series that ran but two seasons from 1960 to 1962.
In the earliest episodes, he had a catch phrase after he set the stage for tonights story and introduced the cast: "As sure as my name is Boris Karloff...tonight's story is a real THRILLER."
In that great Boris Karloff dripping-with-oddness voice.
And then he and the picture around him would fill with slowly building "web strings" that at once suggested a spider's web and a cracked psychopathic world.
I think as the series went on (only two seasons, but a LOT of episodes) they dropped the "sure as my name is Boris Karloff" motif(I mean, everybody KNEW who he was) but continued with the segue to VERY scary music and that "cracked spider web" motif.
Its really quite memorable in its own way -- as memorable as The Twilight Zone and The Outer Limits and certainly the goofy Hitchcock theme song.