Real life special agent David Brant played a role on the show in the 2005 episode "Frame Up." Real life special agent Thomas Betro played a role on the show in the 2007 episode "Identity Crisis." Both played special agents that shared their same name, and both were the real Director of NCIS at the time of their episode's filming.
Though the show is set in Washington, D.C., the team often responds to crime scenes in places like Norfolk, VA. They seem to get to these locations in no time at all, even though it's a several hour drive in real life. Their department should either have massive debt due to speeding tickets or the Uber drivers in the area must know some crazy shortcuts and have some even crazier stories.
Actress Pauley Perrette who plays Abby is a celebrity with a lot of cool tattoos. However, you may have noticed one of her tattoos disappear. In an episode where she changes in front of McGee, we see she has a cross tattooed on her back. This is never seen again, despite the character wearing revealing clothes that expose the area where the tattoo should be.
Most viewers have spotted the "Most Wanted" wall in the background. However, did you happen to notice that they actually keep it up to date? In May 2011, they crossed out Osama Bin Laden with red tape after his death was confirmed.
Abby's middle name is revealed in the 2015 episode "The Lost Boys." Most viewers may have missed it, as it's written on the form with her analysis. Turns out, her full name is "Abigail Beethoven Sciuto."
Tony is unlucky in love and often mocked for it. But did you know some of the jokes are actual digs at actor Michael Weatherly's real love life? For example, in one episode he jokes that he's "got a better chance of hooking up with Jessica Alba than these guys do of infiltrating SeaLift."
Robert Wagner plays Tony's father on the show. This wasn't the first time their similar looks came into play, however. Michael Weatherly played a young Robert Wagner in the 2004 TV film The Mystery Of Natalie Wood.
Ellie joined the show in the 11th season and decorates her desk with Oklahoma State University items. These items actually belong to the actress that plays her. Emily Wickersham was a student at the university, which we are sure is excited to be given a shout out by one of its alumna.