AFI #008 Harrison Ford as Han Solo from Star Wars Episode IV: A New Hope (1977)

Luke: So. You got your reward and you're just leaving, then?
Han Solo: That's right, yeah. Got some old debts I gotta pay off with this stuff. Even if I didn't, you don't think I'd be fool enough to stick around here, do you? Why don't you come with us? You're pretty good in a fight. We could use you.
[Luke and Han are about to go their separate ways; Luke is upset that Han still plans to leave after receiving his reward]
Luke: Come on. Why don't you take a look around? You know what's about to happen, what they're up against. They could use a good pilot like you. You're turning your back on them.
Han Solo: What good's a reward if you ain't around to use it? Besides, attacking that battle station ain't my idea of courage. It's more like... suicide.
Luke: All right. Well, take care of yourself, Han. I guess that's what you're best at, isn't it?
[starts to storm off]
Han Solo: Hey, Luke!
[Luke stops and turns to face him]
Han Solo: [begrudgingly] May the Force be with you.
[Luke exits. Chewbacca growls]
Han Solo: [to Chewbacca] What're you lookin' at? I know what I'm doin'.

- Harrison Ford as Han Solo from Star Wars Episode IV: A New Hope (1977)

The bolded line is ranked #8 in the American Film Institute's list of the top 100 movie quotations in American cinema.

AFI #022 James Bond by Sean Connery from Dr. No (1962)

Bond. James Bond.

- James Bond by Sean Connery from Dr. No (1962)

The bolded line is ranked #22 in the American Film Institute's list of the top 100 movie quotations in American cinema.

AFI #037 Arnold Schwarzenegger as The Terminator from The Terminator (1984)

The Terminator: I'm a friend of Sarah Connor. I was told she was here. Could I see her please?
Desk Sergeant: No, you can't see her. She's making a statement.
The Terminator: Where is she?
Desk Sergeant: It may take a while. Want to wait? There's a bench over there.
The Terminator: [looks around, examining the structural integrity of the room, then looks back at him] I'll be back.

- Arnold Schwarzenegger as The Terminator from The Terminator (1984)

The bolded line is ranked #37 in the American Film Institute's list of the top 100 movie quotations in American cinema.

The character returns by driving a car through the front door. Schwarzenegger has been quoted that he hadn't thought much about the line when filming the movie. James Cameron notes in the DVD features that he expected the line to only get a laugh upon repeat viewings when what the character means is known, and was surprised to see it get a big reaction from first-time audiences who had quickly come to understand the character and immediately anticipated the outrageous violence the nonchalant line signifies. In the novelization of the film script, titled The Terminator by Shaun Hutson the Terminator says "I'll come back," rather than "I'll be back," on page 117. ISBN 0-352-31645-4.

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http://en.wikipedia.org/wiki/I%27ll_be_back

AFI #076 Arnold Schwarzenegger as The Terminator from Terminator 2: Judgment Day (1991)

Hasta la vista, baby became a world-famous catchphrase when it was used in the 1991 film Terminator 2, which was written by James Cameron and William Wisher Jr. The phrase features in an exchange between the film's characters John Connor (Edward Furlong) and the Terminator (Arnold Schwarzenegger):

John Connor: No, no, no, no. You gotta listen to the way people talk. You don't say "affirmative," or some shit like that. You say "no problemo." And if someone comes on to you with an attitude you say "eat me." And if you want to shine them on it's "hasta la vista, baby."
The Terminator: Hasta la vista, baby.
John Connor: Yeah but later, dickwad. And if someone gets upset you say, "chill out"! Or you can do combinations.
The Terminator: Chill out, dickwad.
John Connor: Great! See, you're getting it!
The Terminator: No problemo.

The Terminator says the phrase again prior to shattering the frozen T-1000 with a gunshot:

The Terminator: Hasta la vista, baby.

- Arnold Schwarzenegger as Terminator from Terminator 2: Judgment Day (1991)

The bolded line is ranked #76 in the American Film Institute's list of the top 100 movie quotations in American cinema.