What LLM prompts are you most proud of?

I think there is a set of problems that can be solved incredibly efficiently with LLMs. What are some problems you have solved or prompts you have created that you are particularly proud of?

For example, recently I've been tuning a prompt that literally breaks down a name into its first, middle and last name. Takes a string like "HERBERT W. & ESTHER F. GORDEN" and turns it into first, last and middle name of both names with the end result of "Herbert", "W.", "Gorden", "Esther", "F.", "Gorden". It is incredibly difficult to do with traditional methods, but a short prompt solved it so easily.

Should we try to put together a list of prompts that are just useful?