McGee: Rule number 70 - keep digging till you hit bottom.
Abby: McGee! There is no rule 70.
McGee: Well, I--
Abby: You just made up a rule. This McGibbs thing has really gone to your head. I don't even recognize you right now.

Well tie me up and call me Loretta.

Fornell

Cabot: As you know, the Navy is trying harder than ever to eradicate sexual assault in their ranks.
Gibbs: Was Ensign Tate a rape suspect?
Cabot: Right to the point, as always. No Gibbs, Tate was a second-party complainant. He reported an assault on behalf of a friend.

McGee: I should have been here when you woke up.
Delilah: You're here now.

[after killing Salim] Let's go home.

Gibbs

He ruined my jacket. I'd shoot my own mother

Agent Fornell

You, Gibbs, are an enabler!

Abby

Margaret: Obstetrics? I thought you wanted to specialize in heart surgery?
Young Ducky: It's another four years of university. I've had it up to here with cadavers. To be honest, if I never see another dead body again it'll be too soon.

Margaret: Why didn't you ever marry? You had so much love to give.
Ducky: A colleague and a very good friend of mine lost his soul mate. And then he nearly wrecked his life marrying the wrong woman over and over, trying to find her again. I chose to skip that part.

Ziva: Tony. You are so...
Tony: Handsome? Funny? What?
Ziva: Loved.

You don't waste good. (Season 8, Episode 22)

Rule #5

Delilah: I just have one more question for you.
McGee: Yeah.
Delilah: Why does she need that extra key?

NCIS quotes are not to be missed. The crime solving is great and all, but the one-liners from the characters - and Tony's movie quotes, and Gibbs' one-word zingers - are often some of the most memorable parts of a given episode. Be it simple or profound, the show has a way of amping up the drama when it matters most and using levity to keep things grounded. NCIS quotes cover the full spectrum and then some.

NCIS Quotes

McGee: Rule number 70 - keep digging till you hit bottom.
Abby: McGee! There is no rule 70.
McGee: Well, I--
Abby: You just made up a rule. This McGibbs thing has really gone to your head. I don't even recognize you right now.

Well tie me up and call me Loretta.

Fornell