“NCIS http://GibbsRules.com #1: Never screw over your partner. 4x14 'Blowback'”

“NCIS http://GibbsRules.com #2: Always wear gloves at a crime scene. (Franks) 1x01 'Yankee White'”

“NCIS http://GibbsRules.com #3: Never be unreachable. 3x13 'Deception'”

“Tony (to Gibbs): "I broke rule #6. Never say you're sorry" Gibbs: "It was covered by rule #18" 7x12 "FLESH AND BLOOD" http://GibbsRules.com”

“NCIS http://GibbsRules.com #4: The best way to keep a secret? Keep it to yourself.Second best? Tell one other person - if you must.There is no third best. 4x11 'Blowback'”

“Tony: "Big D as in Dimwit, Little I as in Idiot, Big N as in Nimrod, Little O as in Obtuse, Double-Z like ZZ-Top, and O as in Obtuse. …No, I'm not kidding!" Ep. 7x12 "FLESH AND BLOOD" @USA_Network #NowWatching”

“NCIS http://GibbsRules.com #5: You don't waste good. (…"You're Good" Gibbs says to DiNozzo) 8x22 'Baltimore'”

“NCIS http://GibbsRules.com #6: Never apologize — Its a sign of weakness. … A rule used more often than the others, but finally given a number in 7x12 'Flesh and Blood' during a great Gibbs/DiNozzo moment. The first person to use that phrase was John Wayne in, "She Wore a Yellow Ribbon." "Never apologize, mister, it. It's a sign of weakness." — In the episode 3x23 'Hiatus Part-1' DiNozzo explains to NCIS Director, Jenny Shepard, that Gibbs took this one from "The Duke himself."”

“NCIS http://GibbsRules.com #7: Always be specific when you lie. 1x23 'Reveille'”

“One of Michael Weatherly's best #DiNozzo performances in this scene with Eli David. Ep. 6x25 "ALIYAH" @USA_Network”

“NCIS http://GibbsRules.com #7: Always be specific when you lie. 1x23 'Reveille'”

“NCIS Fans Hit The Mother Lode in JUNE on @USA_Network — Loads of NCIS MARATHONS! See http://USA.NCISfanatic.com ”