I was in NY a few years back on a bachelor party and a bunch of young(ish) English guys flew over for the weekend as they were friends of the groom. We were in a bar in the village and two very attractive ladies came and sat down near us so we started chatting to them. This one guy who was by now fairly drunk, decided to use his favorite lines on one of the ladies. His favorite line? Virtually the entire “Royale with Cheese” section of dialogue from Pulp Fiction. To this day, it was probably the most painfully funny thing I’ve ever seen in my life.
Two I use from My Favorite Year:
Whenever I’m asked the time: “I’m not allowed to wear a watch. I don’t trust them, one hand is shorter than the other.”
Good for nosy questions or just to shake things up: “Go ahead and lash me, you swine! You’ll not loosen my tongue!”
“Serpentine! Serpentine!” -whenever I’m running around the yard playing with the kids- The Inlaws
“World’s an imperfect place. Screws fall out all the time.” -doing odd jobs around the house- The Breakfast Club
“No self-respectin’ southena uses instant grits!” -when cooking breakfast for the family- My Cousin Vinny
“Gopher, Everett?” anytime I’m grilling something and a friend walks up to check the progress.
“Damn! We’re in a tight spot!”
“Well! Ain’t this place just a…a geographical oddity!” all from O Brother Where Art Thou?
Might just be from them Von Trapp varmints possibly? Do I get a cookie? 
Keep believin!
A favourite of mine (and I am sure the occasions are probably obvious) is "never seen a man in more desperate need of a blow job"
Not verbatim perhaps, but effective 
I’ll be back.
Must be said with affected hobbit accent after a comical fall:
“I think I’ve broken somethin’”