The Tingler (1959) - Newspaper Ad

San Francisco Examiner - September 25, 1959

Long before Chuck Tingle and his Tinglers were a gleam in anybody's eye, there was this nifty "little" monster shock-fest from William Castle. 

That shiver that tingles your spine whenever you are afraid? Well, turns out that is a sentient creature that can only be tamed by your screaming. If you do not not scream, it can and will grow strong enough to kill you!

Yes, it is ridiculous. But it also has some effective sequences in it and a rather unique monster. What is there not to love?