With NCIS Season 12 set to premiere on Tuesday, September 23, fans of the show feel as though they know both the characters and actors well.
And it makes sense: Some of them have been turning up in our living rooms for over a decade via this CBS drama alone.
But cast members enjoyed unique and interesting careers long before they joined up for NCIS. From small roles on soap operas to iconic roles we'll never forget, below we take a look at where we saw our favorite NCIS actors before they were the stars we know today.
Ready to go back in time? Some of these roles may surprise you...
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.
Before she became Gibbs favorite, Pauley could actually be seen in an ABC Afterschool Special "The Magical Make-Over". She later had guest roles on Frasier, The Drew Carey Show, Dawson's Creek, 24, and CSI before landing at NCIS.
Before he was Tony DiNozzo, Michael started out as Theo Huxtable's roommate on The Cosby Show. He then spent time in The City (formerly the ABC soap Loving) and then opposite Jessica Alba in Dark Angel.
Rocky has been all over our TV screens throughout the years. He was Dr. Keith Wilkes on Chicago Hope, Carl Reese on The Agency and did guest roles on The West Wing, ER, and Boston Legal before coming on board NCIS.
[voiceover] Anyone can achieve their fullest potential, who we are might be predetermined, but the path we follow is always of our own choosing. We should never allow our fears or the expectations of others to set the frontiers of our destiny. Your destiny can't be changed but, it can be challenged. Every man is born as many men and dies as a single one.