### Clue: Silly sort returning textbook cucumber sandwiches (6)
### Answer: CUCKOO 
 ### Explanation: Definition: Silly sort
 **Reversal of**(returning) **and hidden in**(… sandwiches) "textbook cucumber".**
Together with 6 down, part of the movie dialogue:
HARRY:
Don't be so gloomy…After all, it's not that awful. Remember what the fellow said…in Italy, for thirty years under the Borgias, they had warfare, terror, murder, bloodshed, but they produced Michaelangelo – Leonardo Da Vinci, and the Renaissance…In Switzerland, they had brotherly love. They had five hundred years of democracy and peace, and what did that produce?…The cuckoo clock.
So long, Holly.
Spoken in a compartment on the Ferris wheel: