* ActingForTwo: In "Show Stopper," Creator/LucyHale plays [[spoiler: a pop star and her BodyDouble, who's killed in the opening]].
* ActorAllusion: When [[Series/{{Leverage}} Aldis Hodge]] guest-starred all the poker players got ''Leverage''-style titles (he was "Rap Mogul"; others were "Movie Star" and "Housewife").
** This isn't the only [[Series/NYPDBlue crime drama]] that David Caruso appeared in.
* CreatorBacklash: Music/RobZombie wasn't very happy with his director effort for the show "L.A.", calling it the worst two weeks of his life, citing a lack of creative freedom and not getting along with David Caruso.
* FanNickname:
** The Sunglasses of Justice : Horatio's shades.
** The Hummer of Justice: The Hummers they drive.
** Super H : Horatio, especially during his dramatic escapes without injury.
* LifeImitatesArt: The actress who plays Natalia Boa Vista sister's image was found among the many, many photographs of SerialKiller[=/=]''The Dating Game'' contestant [[http://www.cracked.com/article_19505_5-real-murderers-more-terrifying-than-any-horror-movie.html Rodney Alcala]]. Fortunately she wasn't a victim and the story was later RippedFromTheHeadlines, with her sister in a cameo (also not as a victim).
* PlayingTheirOwnTwin: Creator/GrantGustin played twins in the episode "Terminal Velocity".
* RealitySubtext: Arriving being served papers at New York in the ''Series/{{CSINY}}'' crossover episode "Manhattan Manhunt", Horatio says, "I have a number of memories up here and not all are good. So I apologize.". This is a reference to David Caruso's time in ''Series/NYPDBlue'', in which he had a very public spat with series creator Steven Bochco and left after the fourth episode of season 2 on acrimonious terms.