McGarrett: Must you know every detail of my life?
Danno: Hey, this is the CIA you are dealing with here, okay. They wrote the book on advanced interrogation techniques, which I am absolutely positive you have sitting on your bedside table right now.

Rachel: I assume you've heard the term passive-aggressive.
Danno: I wasn't being passive-aggressive.
Rachel: No, you were being aggressive-aggressive.

Danno: He said he was going in for a business meeting. Who pats you down for a business meeting?
McGarrett: Someone who doesn't want to get caught.

McGarrett: Why, what are you going to do?
Danno: It's nothing. I've got it. I'm gonna take care of it.
McGarrett: Okay, I know what nothing means, so...
Danno: Nothing means, nothing, Stephen. I'm fine.
McGarrett: Don't go anywhere I'm gonna be there soon.

Matt: What's with the third degree, Magnum? Are you looking to poach my client?
Danno: Yeah, I'm trying to poach your client. I'm checking in on my little brother's career; that alright?

Danno: You ready to see your Uncle Mattie, or what? He's what?
Grace: The coolest ever.
Danno: You know a less secure father might take that personally. I always considered myself the coolest ever.

McGarrett: Okay, I know what nothing means, so...
Danno: Nothing means, nothing, Stephen. I'm fine.
McGarrett: Don't go anywhere I'm gonna be there soon.

Steve: Ok, uh, what about this ransom?
Danny: Twenty million dollars. Yeah, each of the parents received a call on their cell phone, same exact call. And unlike having lunch with you, they don’t care how the check is split, they just want the money

So, you pirates have a piratey code of silence?

Danno

McGarrett: I'll be back.
Danno: I'll be back? That's all you could come up with is, I'll be back? Trust me he's done better.

Danno: When did you start jogging?
Kamekona: I'm training bra'.
Danno: Did he just say he's in a training bra?

Danno: I am stretching because my back hurts. You know why my back hurts?
McGarrett: No. Why does your back hurt?
Danno: Because I spent the morning pushing a car down the highway.
McGarrett: Oh, where I come from that's called good exercise.
Danno: Oh really? Where's that, Krypton? Where I come from it's called a workers comp settlement.

Hawaii Five-0 Season 1 Quotes

Danny: We shouldn't be doing this without backup.
Steve: You are the backup.
Danny: I am the backup. I hate him so much.

McGarrett: Tell me you know how to swim.
Danny: I know how to swim. I swim for survival, not for fun.