* ActorAllusion: This isn't [[Film/FantasticFour the first time]] Creator/MichaelChiklis has been a super-tough superhero. It's also the third time he played someone who [[Series/TheShield worked for the police]].
** This isn't the first time [[HumanTarget Katie]] has been a comic-book loving sidekick in a superhero-ish universe.
** After being startled by a home invader in the shower, Stephanie says she'll be taking baths from now on. [[Series/{{Dexter}} That may not turn out so well]].
* TheDanza: Jimmy Bennett as Jim Junior "JJ" Powell.
** For now, Josh Stewart as the Watcher's (Joshua) current alias.
* DawsonCasting: Averted with JJ. Played straight with Daphne. JJ's actor Jimmy Bennett is the same age as the character he's playing. Kay Panabaker as Daphne, on the other hand, is a 20 year old playing a high school sophomore.
* HeyItsThatGuy
** [[Series/TheShield Vic Mackey]] is Jim. Or is that [[{{Film/FantasticFour}} Ben Grimm]] without the skin condition?
*** God Help Us All if ''WesternAnimation/RobotChicken'' gets wind of this...
** [[Series/BuffyTheVampireSlayer Darla]] and Rita from ''Series/{{Dexter}}'' is Stephanie.
** Debbie from ''Series/PhilOfTheFuture'', also known as [[Series/{{Angel}} Mesektet or ''The Conduit'']], is Daphne.
** Tom from ''PersonsUnknown'' apparently got better and became a board member.
** Katie Andrews (Stephanie's lab tech) also helps out The Human Target (as a computer tech).
*** Not to mention she was a Titan in Valentine. And Taylor in The OC. And an Allied Commander in Red Alert 3.
** Dr. Abbott from ''Series/{{Everwood}}'' shows up as a marriage counselor.
** [[{{Film/StarTrek}} James Tiberius Kirk]] is JJ.
** [[SeventhHeaven Reverend Camden]] is Stephanie's boss [[spoiler: and possible HiddenAgendaVillain, if not the BigBad.]]
*** No, no, it's [[TalesOfTheGoldMonkey Jake Cutter]]!
** Conrad from ''{{Weeds}}'' somehow got out of dealing, to become a DA and Jim's best friend.
*** [[{{Weeds}} Guillermo]] also got out of working with Mexican crime bosses to become a detective.
** The second Whedon alum to appear, George's partner hails from ''Series/{{Angel}}'' and ''Series/{{Dollhouse}}''.
** [[Literature/{{Twilight}} Jasper]] showed up in one episode.
** Daphne's love interest in a recent episode is from KyleXY.
** The Watcher is JJ's husband in ''Series/CriminalMinds'' ([[HoYay No, not that JJ]]).
** When [[{{Warehouse13}} Myka]] isn't pretending to be the IRS, chasing artifacts, or getting into LesYay with super villains, she's apparently an IAB officer.
** [[MyNameIsEarl Randy Hickey]] apparently went to prison and [[spoiler:gained the ability to turn into smoke.]]
** [[Series/{{Supernatural}} Meg]] has earthquake powers now.
** Two [[Series/BattlestarGalacticaReimagined Cylons]] (Tricia Helfer and Lucy Lawless) appear together in "N.O. Love". Of course, one of them's also known as [[Series/XenaWarriorPrincess Xena]].
** Jesse, who picked up Darla in ''Series/{{Buffy|the Vampire Slayer}}'''s first episode and was kidnapped by her, also debuts in "No Ordinary Love". He has been turned into a super by Darla herself and he attacks her family.
** Lucas Winnick is Duke from Series/{{Haven}}
* HeyItsThatVoice: with examples categorized by dub.
** Italian dub:
*** Katie Andrews is [[Series/{{Smallville}} Chloe Sullivan.]] Kinda fitting [[FridgeBrilliance once you think about it.]]
* RealitySubtext: [[spoiler:Autumn Reeser (Katie's actress) is pregnant in real life, and her pregnancy is being worked into Katie's character after Kaite got knocked up by Josh.]]
* SoMyKidsCanWatch: Creator/MichaelChiklis mentions this as a reason for being on the show during an interview on Good Morning America (9/28/2010).