This was one of my favorite shows of the past. I also watched the Twilight Zone and another show called Science Fiction Theater. SFT wasn't generally spooky. One episode that comes to mind was about a scientist experimenting with a hormone/chemical that kept insects like bees constantly active. Once the substance was isolated he tried it out on humans - with the result of people dashing about as they did mundane activities like mowing the lawn, etc. They used filming subjects in slow motion, then speeding the action up to display the results.
I might add that some years ago I bought a CD with music from One Step Beyond - except for the main theme it was pretty much a waste of money. Shows like this stirred the imagination for lots of kids - one reason I became a science teacher.