Here are some choice ones from the Monster Hunter International series.
"Vampires only sparkle when they're on fire." - Owen Pitt.
"Everything's immortal until you figure out how to kill it." - Earl Harbinger.
"I've encountered evil that most people couldn't comprehend and I shot it in the face." - Owen Pitt, again.
"Stop, drop, and roll doesn't work with napalm." - Still more Owen Pitt.
All excellent bits of advice for getting through life.
From the Lord of the Rings series, including The Hobbit:
"Not all those who wander are lost." - Gandalf the Grey.
"YOU. SHALL NOT. PASS!!!" - Gandalf the Grey.
"I am no living man!" - Eowyn, shieldmaiden of Rohan, immediately before killing the Nazgul chief.
"I may not be able to carry it for you, Mr. Frodo, but I can carry you!" - Samwise Gamgee, in what is quite possibly the ultimate Crowning Moment of Heartwarming. This was actually in the movie - the quote in the book was different, but with the same effect, namely, making you jump up and start cheering.
I'll need to look up some of the longer and more inspiring ones, but these should be more than enough for now. Good gosh, I love Lord of the Rings. I get chills just thinking about those books.