This is an excellent compilation (6 minutes). Many, many outstanding ones shown. But, as usual, there are at a few significant omissions.
Stand and Deliver: "If you don't have the ganas, I will give it to you because I'm an expert."
The Right Stuff: "Let's light this candle!"
Gandhi: Tie between "General, how does a child shot with a 303 Lee-Enfield 'apply' for help?" and "Mr. Kinnoch, I beg you to accept that there is no people on Earth who would not prefer their own bad government to the good government of an alien power."
Three Days of the Condor: "How do you know they'll print it?"
An Officer and a Gentleman: "My grandmama wants to fly jets!"
The Verdict: "Who were these men? Who were these men?"
And, of course, from Young Doctors in Love: "Old man, don't you think you've pissed enough?"
Also about movies: "The Ultimate Film and TV Spoiler Guide".