Tonight, the The Late Show is getting a visit from Mark Harmon of #NCIS! 11:35/10:35c, on CBS. #LSSC

Tonight -- Watch NCIS on @ncisverse's Mark Harmon on the The Late Show on CBS 58 News .

Mark Harmon stars in NCIS on @ncisverse and he’s on the Late Show tonight! #LSSC

Mark Harmon’s suit was loud even in a black and white photo. 😂#LSSC

Well, this interview just confirms what we all knew: Mark Harmon is an American treasure. #lssc The Late Show

Here’s a GIF of me getting beat up by Mark Harmon. Nicest guy on TV

Watch former UCLA Football quarterback Mark Harmon’s reception speech from when he was awarded by the National Football Foundation as the 2019 recipient of the NFF Gold Medal: youtu.be/bzR8OsZQUuE. Mark is a tremendous Bruin for which all Bruins can be proud. #BruinFamily

Thank you! In another life maybe Gibbs and Sarah could’ve been more than neighbours... Was a real treat working with Mark Harmon and all the other lovely actors on the show #luckyme

To all my friends here: Fröhliche Weihnachten, Merry Christmas, Feliz Navidad, Buon Natale, Joyeux Noël, Vrolijk kerstfeest, God Jul, Feliz Natal, Happy Hanukka #markharmon #istandwithmarkharmon #Illstandwithmarkharmon #NCIS #MHP

#UCLA100: UCLA Football defeated No. 1-ranked and 2-time defending national champion Nebraska, 20-17, in 1972 to snap the Cornhuskers' 32-game winning streak. For more Centennial moments, visit uclabruins.com/centennial

Shared by Amy Slater on IG. A young Mark Harmon. So adorable. #MarkHarmon #Throwback

I’ve confirmed one of the nicest couples in LA! Years ago a film with Pam Dawber and tonight on NCIS on @ncisverse with Mark Harmon. Wonder cast great director!! Full of gratitude!! 8/7c on CBS

Mark Harmon accepted the Gold Medal award from the National Football Foundation last month in NYC. Is their highest award. He was UCLA qb. We had an interesting conversation. Very nice person, indeed.

Thank you Mark how kind of you, the show starred Mark Harmon of course, your namesake what a wonderful guy he is I had a great time.

More lies and accusations. Puh, if "her" crew people would have sent those videos of her attacking him and others, she would be fried. And there are still people falling for her lies. She never paid for anyone's security. She pissed off guest stars, co-workers and crew members.

Basically Pauley P. is saying that Emily Wickersham maria bello @DionaReasonover Sasha Alexander Lauren Holly Jennifer Esposito @SeanHMurray Brian Dietzen Wilmer Valderrama Rocky Carroll Duane Henry & more are liars Good to know what she really thinks of all those great people.

Funny how CBS was always soooooo good to her but now they're evil. Just like her 1st husband was her big love. Then he was the monster. Same with other ex-boyfriends, good friends, co-workers (Cote & Mark). Even her relatives were good, then bad and now they're good again.

Fighting to keep Bristol Bay "Wild" and the salmon that create life there. Director @AugustIsland's great documentary The Wild - our cover story - includes Adrian Grenier ChefTomDouglas Steve Gleason - "Live Impossible" #MarkHarmon Zaria Forman Tom Colicchio and others. aksportingjournal.com/saving-whats-w…

#NCIS's Mark Harmon wins our Fan Favorites' Best Actor poll! See which stars he beat out to take top honors ow.ly/MLRd50AQrQP

Mark Harmon - 1985 #markharmon