Mark Harmon was a star long before he signed up for NCIS. Die hard fans might remember him from the primetime soap Flamingo Road, Dr. Caldwell for St. Elsewhere, or the third wheel in the Dave and Maddie triangle on Moonlighting. However, we're still mourning his untimely death as Agent Simon Donovan, CJ's romantic interest on The West Wing.

We foresee conflict between Gibbs and Barrett on NCIS. Just a hunch.

Bishop and Gibbs head to Afghanistan during an investigation on NCIS. "Lost in Translation" is the 21st episode of the show's 12th season.

Gibbs and the man whose name, Leroy Jethro, he was given in a photo from "Namesake." The fifth episode of NCIS Season 10 airs October 30, 2012. Billy Dee Williams guest stars.

Gibbs and Fornell team up to find two escaped prisoners on NCIS. "Return to Sender" is the 21st episode of the show's 13th season.

Gibbs and Westcott in "Shell Shock, Part I." The episode of NCIS airs November 13, 2012.

Gibbs tries to figure out how a petty officer's abduction is connected to her missing husband on NCIS. "Shell Game" is the sixth episode of the show's 14th season.

A murder may link back to Ducky's deceased mother on NCIS. "The Tie That Binds" is the 10th episode of the show's 14th season.

Gibbs and the team work with the Mounted Police at the National Park on NCIS. "Beastmaster" is the 22nd episode of the show's 14th season.

The body of a missing Navy Lieutenant is found when a cemetary moves caskets on NCIS. "Twofer" is the second episode of the show's 15th season.

The team's Thanksgiving plans are on hold when they track down a murderer on NCIS. "Ready or Not" is the ninth episode of the show's 15th season.

A deal is made to bring Gabriel Hick, the murderer who deceived Gibbs and Fornell, to justice on NCIS. "Keep Your Enemies Closer" is the 15th episode of the show's 15th season.