Dr. Stranglove! Wow, we just caught part of that Friday night.

Major T. J. "King" Kong: "Well boys, we got three engines out, we got more holes in us than a horse trader's mule, the radio is gone and we're leaking fuel and if we was flying any lower why we'd need sleigh bells on this thing... but we got one little budge on those Rooskies. At this height why thy might harpoon us but they dang sure ain't gonna spot us on no radar screen!"

And, of course, the famous scene involving the Sgt.'s namesake:

Group Capt. Lionel Mandrake: "Colonel... that Coca-Cola machine. I want you to shoot the lock off it. There may be some change in there."
Colonel "Bat" Guano: "That's private property."
Group Capt. Lionel Mandrake: "Colonel! Can you possibly imagine what is going to happen to you, your frame, outlook, way of life, and everything, when they learn that you have obstructed a telephone call to the President of the United States? Can you imagine?! Shoot it off! Shoot! With a gun! That's what the bullets are for, you twit!!"
Colonel "Bat" Guano: "Okay. I'm gonna get your money for ya. But if you don't get the President of the United States on that phone, you know what's gonna happen to you?"
Group Capt. Lionel Mandrake: "What?!"
Colonel "Bat" Guano: "You're gonna have to answer to the Coca-Cola Company."

Then there's Dark Star, which for some reason makes me think of Silent Running too.