I thought a fun idea for a thread would be one in which to post cool quotes from... well anything really, be it movies, tv, novels, comics whatever takes your fancy. Here's a few of my favourites to get the ball rolling:

Gotrek Gurnisson - Trollslayer
"The first one to harm the manling dies instantly... the second I'll take my time over!"

Edmund Burke
"The only thing necessary for the triumph of evil is for good men to do nothing"

Ghostbusters
Dr Ray Stantz: Gozer the Gozerian... good evening. As a duly designated representative of the City, County and State of New York, I order you to cease any and all supernatural activity and return forthwith to your place of origin or to the nearest convenient parallel dimension.
Dr. Peter Venkman: [Sarcastically] That oughta do it. Thanks very much, Ray.
Gozer: [Evil voice] Are you a God?
Dr Ray Stantz: [Peter nods] No.
Gozer: Then... DIE!
[Electrocutes the Ghostbusters; pushing them to the edge of the apartment building; people screaming in the street below]
Winston Zeddemore: Ray, when someone asks if you're a God, you say "Yes"!

Casino Royale
Vesper Lynd: It doesn't bother you; killing all those people?
James Bond: Well I wouldn't be very good at my job if it did.

Star Wars: Revenge of the Sith
Padmé Amidala: So this is how liberty dies... with thunderous applause.

Doctor Who - Doomsday
Cyber Leader: Dalek's be warned, you have declared war upon the Cybermen.
Dalek Sec: This is not war, this is pest control.
Cyber Leader: We have five million Cybermen, how many are you?
Dalek Sec: Four.
Cyber Leader: You would destroy the Cybermen with four Daleks?
Dalek Sec: We would destroy the Cybermen with ONE Dalek! You are superior in only one respect.
Cyber Leader: What is that?
Dalek Sec: You are better at dying!

The Dark Knight
Lucius Fox: Let me get this straight. You think that your employer, one of the wealthiest, most powerful men in the world, is secretly a vigilante who is spending his nights running around the city beating criminals to a pulp with his bare hands. And your plan is to blackmail this person? Good luck.

Babylon 5
Cmdr. Jeffrey Sinclair: Ask ten different scientists about the environment, population control, genetics, and you'll get ten different answers, but there's one thing every scientist on the planet agrees on. Whether it happens in a hundred years or a thousand years or a million years, eventually our Sun will grow cold and go out. When that happens, it won't just take us. It'll take Marilyn Monroe, and Lao-Tzu, and Einstein, and Morobuto, and Buddy Holly, and Aristophanes, and all of this - all of this - was for nothing. Unless we go to the stars.

The Order of the Stick Webcomic
Vaarsuvius: 'I am capable of rearranging the fundamental building blocks of the universe in under six seconds with enough time left over to move 30 feet. I am capable of manipulating matter and energy on a subatomic level by speaking. A mere flick of my finger is sufficient to alter the gravitational pull of the planet. I shelve physics texts under "Fiction" in my personal library! I consider the Laws of Thermodynamics loose guidelines at best! In short, I am grasping the reins of the universe's carriage, and every morning I wake up, look to the heavens, and shout "Giddy up, boy!" You may never grasp the complexities of what I do, but at least have the courtesy to feign something other than slack-jawed oblivion in my presence. I, sir, am a wizard, and I break more natural laws before breakfast than of which you are even aware!'

Rome
Titus Pullo: 'THIRTEEN!!'