For me it was from the film Zulu when thousands of Zulu warriers appeared on the horizon shouting and banging, singing and chanting, rising and falling. "the *** are taunting us!" says one British soldier, "You couldn't be more wrong" replies the local Boer. "They are saluting you!" That is the line I remember.
Bob and Jack on a camping trip in Canada.
Bob says to Jack . "What would you do if you met a bear" . Jack " I would run like hell" Bob " you can't outrun a bear !" Jack " I don't have to I just have to outrun you!" .. .Sorry I can't remember the film
'Assume nothing, apart from the occasional air of intelligence' Alan Rickman (who else could it be) in Prince of Thieves, I used it regularly when still at the chalkface.