Most of my favourites are pretty well known ones but that's because they work so well

1. 'Charlie don't surf' -
Apocalypse Now
2. 'You're going to need a bigger boat' -
Jaws
3. 'You can't fight in here, this is the War Room' -
Dr Strangelove
4. 'Give me some sugar baby' -
Evil Dead 3
5. 'I know what you're thinking. Did he fire six shots or only five? Well, to tell you the truth, in all this excitement, I've kinda lost track myself. But being as this is a .44 Magnum, the most powerful handgun in the world, and would blow your head clean off, you've got to ask yourself one question: Do I feel lucky? Well, do ya punk?' -
Dirty Harry
6. 'Your clothes. Give them to me' -
The Terminator
7. 'Get your stinking paws off me, you damned dirty ape!' -
Planet Of The Apes
8. 'Man, I see in fight club the strongest and smartest men who've ever lived. I see all this potential, and I see squandering. God damn it, an entire generation pumping gas, waiting tables; slaves with white collars. Advertising has us chasing cars and clothes, working jobs we hate so we can buy shit we don't need. We're the middle children of history, man. No purpose or place. We have no Great War. No Great Depression. Our Great War's a spiritual war... our Great Depression is our lives. We've all been raised on television to believe that one day we'd all be millionaires, and movie gods, and rock stars. But we won't. And we're slowly learning that fact. And we're very, very pissed off.' -
Fight Club
9. As far back as I can remember, I always wanted to be a gangster.' -
Goodfellas
10. Don't mock me my friend. It's a condition of mental divergence. I find myself on the planet Ogo, part of an intellectual elite, preparing to subjugate the barbarian hordes on Pluto. But even though this is a totally convincing reality for me in every way, nevertheless Ogo is actually a construct of my psyche. I am mentally divergent, in that I am escaping certain unnamed realities that plague my life here. When I stop going there, I will be well. Are you also divergent, friend?' -
Twelve Monkeys
I'm sure I've missed loads of my favourites out, but there's just so many. These are the really standout memorable ones for me though.
Just had a re-read of these and wow they are incredibly mainstream lol. I can't turn away from them though, in some instances they are lines that make the entire film for me. It's not possible for me to plough through some more obscure films because these are the lines that have stuck in my head and really are just classic pieces of writing.