I'm semi-surprised people didn't get the Indy quote, or the Thomas Crown one...
1) A: You look wonderful!
B: Thank you! How are you?
A: Popular.
The Thomas Crown Affair
2) You know what they say about fear. The only remedy is to cut off the head.
Entrapment
3) A: Who are you, and why are you doing this?
B: We are bad men, and for the money!
Count of Monte Cristo (2002 version)
4) My bite is much worse than my bark.
Inside Man
5) A: My family's been in manure for three generations.
B: No shit.
After the Sunset
6) A: I cannot lift this.
B: Grow stronger.
13th Warrior
7) I am so tired of being shot at!
Sahara
8) I'm like a bad penny, I always turn up.
Indiana Jones & the Last Crusade
9) You really should learn to knock.
Equilibrium
10) You know, I have a theory that hieroglyphics are just an ancient comic strip about a character named Sphinxy.
When Harry Met Sally
11) Enough. Enough now
Love Actually
12) I don't care what you believe in, just believe in it. Serenity, correctly identified by
prodigal 13) Isn't that just like a wop? Brings a knife to a gun fight. The Untouchables, as identified by
lexx_uk and
pouncykitten 14) One thing is true of all governments - their most reliable records are tax records.
V for Vendetta
15) It's a living thing, Brian. It breathes, it eats, and it hates. The only way to beat it is to think like it. To know that this flame will spread this way across the door and up across the ceiling, not because of the physics of flammable liquids, but because it wants to. Some guys on this job, the fire owns them, makes 'em fight it on it's level, but the only way to truly kill it is to love it a little. Just like Ronald.
Backdraft, correctly identified by
prodigal, with an honourable mention to
failing_angel 16) A: You slammed the door on the General pretty hard, didn't you?
B: That was not my intention.
A: Oh, yes, it was! He was patronizing you, and you stomped on him! And in my opinion, he deserved it!
Correctly identified as The Hunt for Red October by
lexx_uk 17) A: The last four days on Earth. If I had a dick, I'd go get laid. But we can do that next best thing.
B: What's that?
A: Let's kill people. Oh, not you.
Correctly identified as Dogma by
archangelbeth 18) And whosoever shed man's blood, by man shall his blood be shed, for in the image of God made He man - Boondock Saints, correctly identified by
prodigal 19) I was never more certain of how far away I was from my goal than when I was standing right beside it.
Gattaca
20) It's not about anger - it's about peace. It's not about power - it's about grace. It's not about knowing your enemy - it's about knowing yourself.
Bulletproof Monk