Steve McGarrett: Book'em, Danno!

McGarrett: Your captain said you transferred in from New Jersey six months ago, so your eye’s still fresh.
Danny: You know, I appreciate it, but my psych eval’s not for six weeks.

Danny & Steve:

Danny “Danno” Williams: You have got to do a better job of picking your friends.

Steve McGarrett: What are you talking about? I picked you.

Tani & Danny:
(They have so many funny quotes & lines in this show especially Danny & Steve)

Steve McGarrett: Do you realize how much of your life revolves around food?

Danny “Danno” Williams: Do you realize how much of your life revolves around armed conflict?

Jerry:

Tani:

Steve and Danny:

Steve McGarrett: Do you realize how much of your life revolves around food?

Danny “Danno” Williams: Do you realize how much of your life revolves around armed conflict?

Danny:

Guess the rest of us who don't have a seat on an aircraft carrier will just have to get out or snorkels.
— Steve McGarrett

Steve:

Lou, Steve & Jerry:

Guess the rest of us who don't have a seat on an aircraft carrier will just have to get out or snorkels.
— Steve McGarrett

Jerry & Kono:

Sam Kavanaugh:
[McGarrett wants to know what happened to the agent] Hey McGarrett, back off!... This does not concern Five-O!

Det. Steve McGarrett:
Now is that right?

Sam Kavanaugh:
That's right!

Danny:

Man, a spy really should have a stronger password.

- Tani [to Harry]

Danny & Steve:

Chin: Look, I can't be a cop anymore.
McGarrett: Why not?
Chin: Because I can't be! You understand? HPD accused me of taking payoffs, so I'm the last person the department wants to see wearing a badge. I've gotta go.
Danny: This is going really well.
McGarrett: Did you take the money?
Chin: Excuse me?
McGarrett: [more directly] Did you take the money?
Chin: No.
McGarrett: Then come with us. And we don't need to talk about this again. Ever. This is your ticket back into the game. Call it payback, call it whatever you want, I don't care, but I need you.
Chin: How do you know you can trust me?
McGarrett: Because my old man did.

Tani:

Det. Danny Williams: [as McGarret exits the car] Hey. Hey! HEY! This guy Doran's a shooter, all right? We shouldn't be doing this without back up.

Det. Steve McGarrett: You *are* the backup.

Det. Danny Williams: I'm the back up? I hate him. I hate him so much.

Steve:

[Steve and Danny are watching a movie with Catherine and Gabby]
Steve: What, did I miss something? I mean, the music just went all sad.
Danny: That's because that's how the filmmakers want you to feel. Sad. See?
Steve: Well, no, this is supposed to be a romantic comedy. This is neither romantic nor funny. I don't understand what's happening.

Danny: What are you doing? Sit down. Sit down, please.
McGarrett: What am I doing? What are you doing?
Danny: I'm doing a little recon.
McGarrett: Recon?

[Looking at Tani] When I said to bring me a delicious snack, I meant food.

- Oscar [to Hirsch]

Danny: I think this guy might be crazier than you.
McGarrett: I think you might be right.

[Steve and Danny are being interviewed as part of their yearly psychological evaluations.]
Danny: So, uh, we have been together for 3 years.
Steve: 4.
Danny: See, this is specifically what I'm talking about.
Steve: I was correcting you.
Danny: Okay, 4.
Steve: Three years, eleven months, three days. Exactly.
Danny: You're done? [Steve gives him a "duh" look.]
Psychologist: Detective Williams asked you a question.
Steve: What?
Psychologist: He asked if you were going to allow him to finish his thought.
Steve: Who's side are you on?
Psychologist: I don't take sides, Commander. I'm an objective observer. You know the Governor asked me to oversee the annual psychological audit of personnel and I was concerned by what Detective Williams had to say.
Steve: Okay, yeah, fine. So we don't agree on a few things but I don't see why that's such a big deal.
Danny: [interrupts] "A few things"? A few things?! We don't agree on anything.