I know that this isn't exactly what you're after (but it's in a similar vein):
Question:
There is a seven-letter word in the English language that contains ten words without rearranging any of its letters." Can you think of the word?
Answer:
Therein. The, there, he, in, rein, her, here, ere, therein, herein.
and .....
Question:
There is an English word that is nine letters long. Each time you remove a letter from it, it still remains an English word - from nine letters right down to a single letter. What is the original word, and what are the words that it becomes after removing one letter at a time?
Answer:
The word is STARTLING. Startling, starting, staring, string, sting, sing, sin, in, I.