From the short story Farewell to the Master by Harry Bates
An alien comes to earth with an ultimatum: abandon war, especially nuclear war, or the Earth will be destroyed by other alien races.
This is, of course, a legendary SF movie. My family always had the TV going on Sunday afternoons to watch whatever cheesy old SF and horror movies were playing (back in the days when you had to watch whatever the Television Gods decreed, rather than choosing for yourself.) This was a big favorite, and my sister had a huge crush on Michael Rennie, who I will admit is easy on the eye.
I saw bits and pieces of it, and of course Klaatu Barada Nicto is a famous catchphrase…but I really don’t remember ever having actually watched it all the way through, until Mr. Otter mentioned it and I said, I’ve never seen it. Well, that was a gap in my cultural literacy that got addressed pretty quickly!
For what it was, a preachy cold war movie about eschewing violence, it was pretty good. The special effects weren’t bad for the time, and the story, although pretty far-fetched (none of his abilities was ever explained, he could just do all this random stuff. And he was exactly like Earth humans…hm.) it all held together pretty well.
The story was interesting enough not to be draggy, and of course the ending, “The decision rests with you…” was great.
The Otter liked this classic and was happy not to be disappointed by it!