Are you not entertained? (Gladiator)
THIS IS SPARTA!! (300)
To Infinity and beyond! (Toy Story)
Tumahara naam kya hai basanti? (Sholay)
Frankly my dear, I don't give a damn. (Gone with the wind)
C-O-W COW, Cow mane mero euta bau, hai bau? (Chino)
Baa khasi/ Chappa bhaire Chappa (various MAHA series)
If you vote for me, all of your wildest dreams will come true. (Pedro from Napoleon Dynamite)
when you are a man sometimes you wear stretchy pants in your room...it's just for fun. Nachoooooooooooooooooooooooooo (Nacho libre)
Do, or do not. There is no try (Yoda from Star wars)

 "Ba daamaru..." "dhewamaru damaru"..... "dedh saye bhanya haina meter ko?"  (Dashain, Prior to this year, I think I've watched the show at least once every year for the past god knows how many years, 12-13-14?)
"Guhar guhar, chori le jwai bhagayo" (Jwai) 

The one that i liked the most and havent been mentioned is the climax of Tom Hank's Caste Away...superbly made movie !

 Salman khan@ andaaj apna apna: ...........yesme to goli nahi hey.........Amir khan@andaj apna apna.........oho tumne new york se kharida maine socha to america se socha tha...........

 I dont remeber the name of that movie..........But scenario ..........Amrish Puri knows that his son (Gulsan grober) rapes a lady and with similing face Amrish puri"...........achha mera beta itna jawan ho gaya.............."goddamn.....its antique

 Gimme some sugar baby - Evil Dead part III

 The point I'm making with John Lennon is - a man could look at anything, and make something out of it. For instance, I look at you and I think "what could I use you for?" (The Departed)
-------------
Look at all the stars. You look up and you think, "God made all this and He remembered to make a little speck like me." It's kind of flattering, really 
(Tombstone)
-------------
You're not your job. You're not how much money you have in the bank. You're not the car you drive. You're not the contents of your wallet. You're not your [Disallowed String for - bad word]ing khakis. We are the all-singing, all-dancing crap of the world.(Fight Club)
---------
Now, there comes a point where a reasonable man will swallow his pride and admit that he's made a terrible mistake. The truth is, I was never a reasonable man.(Big Fish)
----------
How tall are you, Private? Five foot nine? I didn't know they stacked shit that high! You trying to squeeze an inch in on me somewhere, huh? (Full Metal Jacket)
-----------
Did you think your song and dance and your superstition would help you, Eli? I am the Third Revelation! I am who the Lord has chosen!(There will be blood)
-----------
I'm a dog chasing cars. I wouldn't know what to do with one if I caught it! You know…I just do things.(The Dark Knight)
-----------
I fantasize about a massive, pristine convenience. Brilliant gold taps, virginal white marble, a seat carved from ebony, a cistern full of Chanel Number 5, and a flunky handing me pieces of raw silk toilet roll. But under the circumstances I'll settle for anywhere.(Trainspotting)
--------------
Few people understand the psychology of dealing with a highway traffic cop. Your normal speeder will panic and immediately pull over to the side. This is wrong. It arouses contempt in the cop-heart. Make the bastard chase you. He will follow.(Fear and Loathing in Las Vegas)

one more that just popped in my head which i think is absulotely hilarious as opposed to the context it was used in the actual movie
मेरे करण अर्जुन-आएङे !

"Blow" where Johhny Deep waits for his daughter at the end.
"Jerry Maguire" when Cuba Gooding Jr. and Tom Cruise shouts "Show me the money" "I love black People"
"Few Good man" Jack Nickolson's speech after the line " You can't handle the truth"
"Good will Hunting" Bar scene
"Walk the line" Joaquin Phoenix dialouge with police officer before singing Cocaine Blues

" Leaving las Vegas" --"You can never never ask me stop drinking"
" There is something about Mary" Hair gel scene
"Jar Head"-- Jelly Doughnut Scene
"Hurt Locker" Grocery store scene
"The Outsidres" Ponyboy reciting "Nothing gold can Stay"
"Stand By me" the Bridge scene

From Glengarry Glen Ross:
(Alec Baldwin's character yells at Jack Lemmon's character)
"PUT . . THAT-COFFEE-DOWN!"
(AB's character paces forward and a silence then)
"Coffee's for closers only"
(JL's character, completely taken aback, cannot believe his ears, and then vents a brief chuckle as if AB's character were joking)

Famous Raj kumar dialogue" Jiska khud ka ghar sise ka Ho , woh dusarain ke ghar pe patthar nahin phekte Jaani".
Andaz apna apna, three idiots , jaane bhi do yaaron, Angoor etc are some very good flavors of bwd movies..
On the Hollywood side few scenes that almost killed me were
Sixth sense -the very last scene of when Bruce Willis finds that he was one of the ghost.
Taxi driver- RD looking himself on the mirror "you taking to me ? U talking to me?"
Pulp fiction - The scene where mafia king is fu... ed up from behind by the policeman.
Terminator - Arnold " I will be back"
Cast away on the moon - the guy shows his thing from island
And many more..…

Terminator

You have to read this in Rajesh Hamal's voice. A scene from Nepali movie Khalnayak. 

सज्जनको लागि नायक हुँ ।

what do you want to do?????
oooh.... I don’t know… screw..... play chess???
let’s play chess

------ 
desi.....

maid is serving coffee.. a pass it on to guest.. black coffee
KOI DUSRI COLOR NAHI HAI BARKHURDAR.. 

rISTEY MAIN TO HUM TUMHARE BAAP LAGTE HAIN..

 

 

Here is one that took me by surprize:

 Same, Chaurey. 

Here is my list, other than what people have already jotted down:

Bladerunner: "time to die" scene at the end as Replicant Roy Batty breathes his last moments, he laments for all the beautiful things he has seen.

Fight Club: Tyler Durden was so whacked-out, his only recourse was to shoot himself in the face. While a bleeding Tyler and a bewildered Marla hold hands, Project Mayhem is executed right before their eyes to the sounds of “Where Is My Mind?” by the Pixies. A fitting end to an amazing flick.

Fargo: In the end no one gets the money :D

Donnie Darko: The ending

Hitchhiker's guide to the galaxy: The answer to life, universe and everything is ??? .....haaaa you'll know what i mean if you've seen this movie.

बसन्ती (हेमा मालिनी): चल धन्नो तेरी बसन्ती कि इज्जत का सवाल है !

धन्नो (घोडी): अब्बे चुडेल तुझे बस अपनी फिकर है ! मेरा क्या होगा ! गब्बर के सौं घोडे जो मेरे पिछे पडे है !