Over on the movie movie site people get into movies that are very little known but didn't get heavy metal. Ill try to avoid the esoteric ones.
Ok, here's one I got. Since this isn't a movie page I'll give hints.
A 100° winter
with several folks slain
blame it on microwaves
and hope that it rains.
It's a British scifi horror movie from the 60's that had a prominent British scifi horror actor.
Before I resorted to properly reading the hint I was looking into 100 Degrees Below Zero and trying to see if rain or microwaves somehow come into a plot involving volcanic winter or whatever. So I was pretty damn far off. I knew for sure at that point I wasn't getting it without doing some digital research, so to speak. I don't know how if at all to do spoilers on this site, so anybody wanting to try to guess it the proper way, be forewarned.
Is it Night of the Big Heat? I really ought to look into the cinema classics a bit more, especially horror, though I've never really been able to get into that genre for some reason. You seem to know that area of artistic expression admittedly a fair bit better, but I appreciate the references and poems because it gives me stuff to look into.
Yes that is one of several titles it's known by. Good job.
Now to try one without clues...
Tho only wishing to knock out cancer's deadly teeth
the poor spineless scientists just gave humanity a horrible new danger.
Ravenous terrors craving not flesh but what lay beneath,
Mono limbed monsters that looked weird but made sounds far stranger.
Figured out that it came from an attempted cure from cancer, and eventually after some fruitless searching with just this and the other poem clues you gave that weren't line 3, realized I'd actually have to figure out what that meant, lol. So, then I eventually went for blood as the answer, then after more fruitless searching realized that veins are oftentimes pretty close to the surface, meaning that what lay beneath was probably bone instead, which fits with the scientists being called spineless (I had been searching for cowardly researchers instead of the more literal term as well). Add in mono-limbed and weird sound making, and my computer's search engine eventually closed in on it. Potential spoiling guess ahead.
Island of Terror, another British classic, I am informed.
Also, have you made any progress with Pat's haiku? Even with the powers of the internet and a will to cheat, so to speak, I'm admittedly still stumped.