Fair enough, Saint. I can see this is a significant bugbear of yours. I abhor shoddy writing / scripting, too.
JB's example of the cavalry as a common Deus Ex Machina, was one that I'd forgotten. Perhaps I can cite my rather youthful age as an excuse.Another common one, perhaps used more recently, is the 'it-was-all-just-a-dream' trope. Great sky-hook that one in scriptwriting. It screams that the author has run out of ideas.
The Cavalry turning up is a common one.
But it does have the significant advantage of actually being possible and not a load of old bollocks.
It's only a bugbear of mine when we get to actually talking about it, though. I don't fill my every waking moment with it.
There are many more important things for me to be a moaning old bastard about.
You lucky people......



