Are you a fan of NCIS? Tonight is the 9th season finale of the top rated show starring Mark Harmon as Special Agent Gibbs. Did you know his parents are Heisman Trophy winner Tom Harmon and actress/fashion designer Elyse Knox? He’s also married to Pam Dawber of Mork and Mindy. In fact, his family tree is filled with lots of famous faces!

Check out his family tree on Geni and see his connection to famous in-laws Ricky Nelson and John DeLorean. Perhaps you can even help expand his tree even further to see how you’re related!

View Mark Harmon’s Geni Profile