* Creative person is having trouble creating. Creative person meets a muse...
Xanadu, the movie.
* Weird things happen, but it turns out they're not real.
About half of Twilight Zone episodes.
* An AI gets loose on the Net, but the author doesn't have a clear concept of what it means for software to be "loose on the Net."
Terminator
* Technology and/or modern life turn out to be soulless.
"The Office"
"The Lorax"
This one goes all the way back to "The Machine Stops".
* Bad person is told they'll get the reward that they "deserve," which ends up being something bad.
Several Twilight Zone episodes.
* Person is floating in a formless void; in the end, they're born.
"2001"
* Person uses time travel to achieve some particular result, but in the end something unexpected happens that thwarts their plan.
That one really has been done to death in SF.
* A mysteriously-named Event is about to happen ("Today was the day Jimmy would have to report for The Procedure"), but the nature of the Event isn't revealed until the end of the story, when it turns out to involve death or other unpleasantness. [Several classic sf stories use this approach, which is one reason we're tired of seeing it. Another reason is that we can usually guess the twist well ahead of time, which makes the mysteriousness annoying.]
This is the plot of the New Testament.
* In the future, an official government permit is required in order to do some particular ordinary thing, but the specific thing a permit is required for isn't (usually) revealed until the end of the story.
That was a 1950s thing, and seems to have died out.
* Someone calls technical support; wacky hijinx ensue. Someone calls technical support for a magical item.
"Oh My Goddess" anime