Do androids dream of electric sheep?
The master of the pithy, enigmatic title, and the inspiration behind many of the best Sci-Fi movies. Not all 6 word, but close:-
"Do androids..." filmed as "Blade Runner"
"We can remember it for you, wholesale" filmed as "Total Recall"
"The man in the high castle"
Oh, and this was posted by Nick Hoffman, but I HAD to put Philip's name in the title line, and he'd already used all 6 words, perfectly...