Richard Schiff and Sheila Kelley playing Harper Dearing and his ex-wife, respectively, are married in real life.
Jamie Lee Curtis, who plays Samantha Ryan, also starred opposite Mark Harmon in the movie Freaky Friday (2003) where Harmon's character was named Ryan.
When Tony (Michael Weatherly) and Ziva (Cote de Pablo) are listing things associated with weddings, Ziva includes "the Ketubah." That is the Jewish marriage contract signed before the actual ceremony.