Anything from “Jaws” - but for some reason, this line from Quint is my favorite:
" I’ll never put on a life jacket again."
Here are a few goodies
“we need a bigger boat” - Jaws
“Look! I have one job on this lousy ship,” Galaxy quest
“It’s just a flesh wound.” Monty Python and the Holy Grail
“la bella luna” - Moonstruck
“and don’t call me Shirley” - airplane
“LEAVE THE GUN. TAKE THE CANNOLI” - godfather
“round up the usual suspects” - Casablanca
“catastrophe” (said with the appropriate accent) - Christmas in Connecticut
Young Frankenstein: “Walk this way”. “Rwoll, Rwoll, Rwoll in the hay”. “Abbie Normal”
Oh! It’s twoo! It’s twoo!
–Blazing Saddles
What hump?
–Young Frankenstein
Lines never quoted, but they ought to be. 
Just remembered a good one!
“Get off my lawn!” - Mr. Walt Kowalski/Gran Torino
You’re killin’me, Smalls!
Stop trying to make fetch happen
Bye,Buddy, hope you find your dad…in proper narwhal voice, of course
“Don’t call me Shirley.” And also from Airplane: “Good luck…we’re all counting on you.” When people are talking about what was on the menu at a family dinner: “Yes, yes, I remember…I had the lasagna.”
Whenever the subject of money comes up, from Best in Show: “Talk to Daddy!” When you see a buxom woman: “Coo-Coo-Coo-Coo-Cookie!”
Sometimes my D’s will break out in song:
“God loves a terrier
yes he does
God loves a terrier
that’s because
brown sturdy bright and true
they give their hearts to you
God didn’t miss a stitch
be it dog or be it bitch
when he made the Norwich merrier
with his cute little ‘derrier’
yes God loves a terrier!”
Now that I think about it, we’re big Best in Show people.
“Peanut. Hazelnut. Cashew nut. Macadamia nut.” “Would you stop naming nuts!”
From History of the World Part 1:
“It’s good to be da King!”
When Harry Met Sally: “I’ll have what she’s having.”
Jaws: To her Dad when D2 saw our little uhaul trailer might not be enough for the move: “I think we’re gonna need a bigger boat.”