NCIS Star Mark Harmon Shows Off His Dance Skills In First TV Role

Mark Harmon is best known and loved for his role as Agent Leroy Jethro Gibbs on the long-running NCIS television series, where he starred for nearly two decades, from 2003 to 2021.

The 71-year-old actor has appeared in various major TV shows and movies throughout his career, including 'The West Wing' and 'Freaky Friday'. But did you know that he made his television debut in 1973 with his NBC sitcom 'Ozzies Girls'?

The actor plays Mark Johnson, a college friend of Susie's who is up against her for class president. At the end of the episode, Mark wins the election and parties on the dance floor. It was revealed earlier that he invited Susie a position as a counselor. See it in action below!

WATCH: Mark Harmon shows off his dancing skills in Ozzie's Girls

Mark thanks his older sister Christine for credits on the first film, who was married to Ricky, son of series creator Ozzy Nelson.

After his debut on the small screen, Mark had small roles in various television series before getting his big break in 1983 as Dr. Robert Caldwell, in the NBC's medical drama "St. Elsewhere."

Mark has been on our screens since 1973

He remained in the role for three seasons before departing in 1986 when his character contracted HIV, one of the first times a regular TV character diagnosed with the virus.

Mark Harmon and Meg Ryan in the 1988 film Presidio

Since then, the actor landed several lead roles on primetime shows, including the police drama Reasonable Doubts, and the mini-series The Deliberate Stranger, in which he played serial killer Ted Bundy.

Mark, who married his wife Pam Dawber in 1987, also made his mark on the big screen, starring alongside Sean Connery and Meg Ryan in 1988's film The Presidio and also with Jodie Foster in Stealing Home.

Mark Harmon with Meg Ryan in the 1988 film The Presidio

In 2003, after his four-episode run on The West Wing, which earned him a second Emmy nomination, JAG and NCIS creator Donald P. Bellisario invited him to guest star in two episodes of JAG as Agent Gibbs.

A few months later, Mark played the same character in the show's spin-off series NCIS, a role he played for nearly 20 years until 2021.