You know sitting can kill you.

My family.

Callen [in Russian]

Arkady: Do I owe you a favor?
Callen: No, but when this is done I'll owe you one.
Arkady: Then this is business.

He's not a giant. He's just husky.

Callen: I'm sorry. Did I miss something? Who are these guys?
Kensi: They aren't guys. They're WODs. W-O-Ds.
Callen: Is that like a B-F-F with an S-T-D?
Kensi: W-O-D is Work Out of the Day.

Callen: You would have made a great mother, Hetty.
Hetty: I like to think I have.

Callen: She's good.
Sam: She's very good.

Callen: It's hard to find good friends in our line of work.
Hetty: It's hard to find them anywhere.

Is this an interrogation or a date?

Callen: Somewhere Granger is laughing.
Sam: Can't hear it. We're dead.

Deeks: ... if you hear my yell "noodles," that means I'm in trouble.
Callen: If I hear you yell "noodles" I'll shoot you myself.

Sam: You know what they say when your partner starts sounding like your wife.
Callen: Get a new wife.