Best movie quote's

http://www.telegraaf.nl/filmenuitgaan/film/21313466/__Beste_filmquote_aller_tijden__.html

I just read this article in the "Telegraaf" (sorry, dutch only), about most famous movie quotes.

Now my brain is working overtime, to find, in my opinion the best quote of all times.
Ofcourse there is the famous: "I'll be back" from Arnie in the movie "The Terminator".
How about "I am gonna make him an offer he can't refuse", which movie was that from?
Of course, the greatest Mafia movie ever, "The Godfather".

Or, just as famous, Roy Scheider from the movie "Jaws": "We're gonna need a bigger boat!"
For me, the scene following this quote is still one of the best scenes from a movie, ever.
You see the shark for the first time in full size swimming past the boat, dramatic movie playing, unforgettable.

Here's another one, not such a classic, maybe most of you have never even seen the movie.
This is from "Dad's Army" from 1971 about the second world war, can you imagine...even older then me:

[Mainwaring and Wilson have just left Godfrey watching the Channel] 
Sgt. Arthur Wilson: It's a beautiful sunset, sir. 
Cpt. George Mainwaring: It's a beautiful land, Wilson. They're not going to get it, you know. We shall fight them until we have just one round each, and we'll use that on ourselves! 
[pause] 
Cpt. George Mainwaring: By the way, how much ammunition have we got? 
Sgt. Arthur Wilson: [trying not to laugh] One round each, sir! 

I am sure you can name a lot more, maybe also scenes from movies that has stayed with you.

Come on, give it your best shot, "Go ahead, make my day!"