The cases of the Naval Criminal Investigative Service's Washington DC Major Case Response Team, led by Special Agent Leroy Jethro Gibbs.

[Tony's nicknames for Agent McGee]
Special Agent Anthony DiNozzo: McCheat - McChittyChat - McContrary - McCranky - McDetail - McEgghead - McFlabby - McFlowerPower - McFreaky - McGarnagle - McGecko - McGeek - McGiggles - McGnome - McGoo - McGoogle - McGPS - McGruff - McGullable - McKilljoy - McLawyer - McLovin' - McMuse - McMotherboard - McNerd - McProbious - McRomeo - McScout - McShipmate - McSnapper - McSneaky - McSofty - McTardy - McTim - McZero
Special Agent Anthony DiNozzo: Probie - Probalicious - Probie-Wan Kanobie - Daniel McBoone - The Great McOz - Elf Lord
Officer Ziva David: Well, you know what they say. You cannot make an omelet without breaking a few legs
Special Agent Anthony DiNozzo: She's never making me breakfast.
Special Agent Timothy McGee: Uh, Ziva, it's 'without breaking a few eggs.'
Agent Caitlin 'Kate' Todd: Do people react that way because we're NCIS, or do you just have that effect on them?
Special Agent Leroy Jethro Gibbs: I'd like to think it's me
Abby Sciuto: I am the Energizer bunny of forensic science: I never sleep and I never give up.
[repeated line]
Special Agent Anthony DiNozzo: [making fun of Gibbs to a co-worker, who doesn't respond] He's standing right behind me, isn't he.
[repeated line]
Special Agent Leroy Jethro Gibbs: You think, DiNozzo?
Special Agent Anthony DiNozzo: What are you McDoing, McGee?
Special Agent Timothy McGee: Working on Kales phone records.
Special Agent Anthony DiNozzo: Thought you already McDid-That?
Special Agent Timothy McGee: Are you finished?
Special Agent Anthony DiNozzo: No, I haven't even started yet.
[about laws changing over time]
Special Agent Leroy Jethro Gibbs: Politicians have their time table, I have mine.
Office Worker: What are you people doing?
Special Agent Leroy Jethro Gibbs: [plain] Seizing your files.