Movie Lines, a new quiz

Just lines from movies this time around. Mostly single lines, but a couple of exchanges. Also two song couplets. As before, I don't have a library of scripts encompassing all these, so the wording may not always be verbatim.

1. "By the authority vested in me as Captain of this ship, I pronounce you man and wife. Proceed with the execution."
2. "To me that gassy smell is. . . victory. One day this war is going to end."
3. "The cat's in the bag and the bag's in the river."
4 "I feel like my life's going on without me in it."
5. "What's left after love dies? Only admiration and respect."
6. "All right. I'll be your dumb decoy duck."
7. (sung) "We are all the singing waiters.
We will sing or serve potatoes."
8. "He was a bad cop."
"But he was a good thief."
9. "And what magazines sell best?"
"The ones with ladies on the front covers and no front covers on the ladies."
10. "A man in Michigan was sentenced to 12 years in jail for having two joints."
11. "I bet on a clear day you can see the class struggle from here."
12. "Sheriff Deeds is dead, honey. You just sheriff Jr."
"Story of my life."
13. "Shoot straight, you bastards. Don't make a mess of it."
14. "Ah, before, madam. Before I was a mass of light. Mad, you see. Nothing was fast enough to match my inner speed. Now I'm sane. The world sweats into my brain, madam."
"Don't keep calling me madam."
15. "We're not laughing at you, Dawn. We're laughing with you."
"But I'm not laughing."
16. "Do you think he knows how much trouble he's in?"
"He must. He saw the sme things I did and they certainly made an impression on me."
17. (sung) "Come now, gentlemen, your love is all I crave.
You'll still be in this circus when I'm laughing, laughing in my grave."
18. "The English lion will be drinking his tea out of German saucers, eh?"
19. "Why did you start the rumour that I am. . . with one foot in the grave?"
"What you said to me the first time we met--"I've heard of you. You said that in a very nasty way."
"That's all?"
"That's all?! Hell, isn't that enough?"
20. "What are they saying?"
" 'Meat, meat, fresh meat, coming up the river.' "