Rod Serling, haven't heard that name for ages.
I remember the Twilght Zone, import to here, was allowed to watch it. Parents thought it too scary, so did I.
Don't remember this one, but might have watched it.
Shatner v The Gremlin -- Two Minute Twilight Zone Project -- Nightmare at 20,000 feet - YouTube
The Twilight Zone still runs in reruns in the US. Sci Fi channel still does a marathon every year I think. Serling's other TV show, Night Gallery was the horror version to Twilight Zone's sci fi.
You should look up "The Obsolete Man", I think it's my favorite TZ episode.
Sadly, Serling died fairly young in the 70s and never got the chance to make a really good feature film. His writing was superb.
BTW, after searching on Urwumpe's post I found the full text of that story I mentioned:
http://web.archive.org/web/20070213...n/classics/classics_archive/disch/disch1.html