I was going to guess it came from the Sopranos.
Probably too easy:
We released ourselves on our own recognizance.
Also:
Kindry [sic] do it yourself, Mr. Moto!
Larry Drake in Karate Kid. YARN | Kindly do it yourself, Mr. Moto. | The Karate Kid (1984) | Video clips by quotes | 5d038d6a | 紗
We’re not laughing at you; we’re laughing near you.
Dead Poets Society. YARN | We're not laughing at you, we're laughing near you. | Dead Poets Society (1989) | Video clips by quotes | 1259a285 | 紗
Wild guess: Edward Fox in The Battle of Britain?
“Sir, there’s a chap outside, sir, who’s pinching our petrol.”
Yep! Love that whole bit with Bo Didley as the pawnbroker.
Pawnbroker : Burnt my fingers, man.
Louis Winthorpe III : I beg your pardon?
Pawnbroker : Man, that watch is so hot, it’s smokin’.
And the last line…
How much for the gun?
Here lies the body of Mary Lee
Died at the age of a hundred and three
For fifteen years she kept her virginity
Not a bad record for this vicinity
“Just take this pen, please, and write me.”
- watched this film last night
This river don’t go to Antry. You done taken a wrong turn.
You’re kidding! 
The only reason I remember that particular scene is because my girlfriend at the time had the hots for Mr Fox.
“Sometimes I amaze even myself!” seems appropo here. 
Yes.
“They were decently treated. They were decently fed. Then they were decently shot.”
Correct! And the response was “That doesn’t sound too hard.”
No. I believe the line from Breaker Morant you’re thinking of was “We caught them, and we shot them, under rule 303!”
“The only rule in the Veldt is Rule .303!”
Try this one:
“Can’t ask the men to do something I wouldn’t do myself.”
No takers – Dawn of the Dead (2004)
BIP: Oh well excuse me, I never promised you a rose garden.
I was going to guess Bill and Ted’s Excellent Adventure, but decided against it.
Another:
“Good kill!”