* ActorAllusion: One of the members of Oversight is portrayed by Alberta Watson, who played Madeline in ''Series/LaFemmeNikita''
** Nathan, Alex's LoveInterest is played by Thad Luckinbill, Lyndsy Fonseca's main love interest as Colleen in TheYoungAndTheRestless.
** Cyrus, a Rogue Division agent turned arms dealer. His sales pitch is evocative of [[Advertising/TheManYourManCouldSmellLike the role that made Isaiah Mustafa famous]].
* FridayNightDeathSlot: Unfortunately, this is most of the reason why Nikita is currently CW's lowest rated show.
* HeyItsThatGuy:
** [[Film/{{X-Men}} Pyro]] is Birkhoff, Division's [[DeadpanSnarker snarky]] [[TechnoWizard tech wizard]] who built the [[OmniscientDatabase Magical Database of Magical Databases]].
** [[Series/HowIMetYourMother Ted's future daughter]] is Alex.
** [[Series/TheOC Julie Cooper]] / [[Series/{{CSI}} Lady Heather]] is resident shrink/[[JackBauerInterrogationTechnique "interrogation expert"]] Amanda.
** Stan Lee describing someone as a "superhero", and acting as Hank [[CatchPhrase Excelsior]].
** Owen's girlfriend Emily played a witch last year on TheVampireDiaries... Her name? [[ActorAllusion Emily]]! She's better known for playing Kendra on Series/{{Buffy|the Vampire Slayer}} and Maya in PrettyLittleLiars, where she dates a girl named [[RuleOfThree Emily]].
** The original Engineer of the entire Black box system is played by the same actor who played the Computer savant Laslo in ''Film/RealGenius''. The character of Laslo went into seclusion after some tech he created was misappropriated by the Govt to create a weapon.
*** For others, he's more recognizable as [[ThePretender Broots]], another computer genius.
** [[Series/TwentyFour George Mason]] is now Percy, the MagnificentBastard who runs Division.
*** And Nina Myers is [[spoiler: Alex's mom]]. (Sarah Clarke [[RealLifeRelative married]] Xander Berkeley [[RomanceOnTheSet after meeting]] on ''24''.)
** And [[ThePhantomMenace Darth Maul]] is Brandon, a Guardian!
** Michael used to be [[{{ER}} a doctor]].
** [[Advertising/TheManYourManCouldSmellLike Isiah Mustafa]] is Cyrus, a rogue Division agent turned arms dealer.
* TruthInTelevision: The episode where Division attempts to kill a Georgian prince has a background in reality. There really is a Monarchist tradition in Georgia (though it's been absent from power for 200 years), and there really was a dynastic squabble settled by the two lines marrying recently, in 2009. All the personal stuff was fake, though.
** Also, Nikita picking at her food in the suburban mealtime in 1x20 because it was a pot roast. She apologises when the kid says she is "busted". This is an allusion to Nikita's actress Maggie Q's real life veganism and animal activism. She is also well-known for ensuring that she works in places that do not use fur, and has changed this when working on certain projects before.
* {{Homage}}: The scene in episode 16 of season one, [[spoiler: where Alex, in her drug-induced haze, "escapes" Division and uses a ceiling hatch to go aboveground only to find herself in Russia in the snow]] is eerily similar to a scene in the Dollhouse episode "The Attic".
* RetroactiveRecognition: In "Alexandra," that's [[Series/LostGirl Kenzi]] as Alex's friend from her sex slave days. And then Lauren as a terrorist four episodes later ("Girl's Best Friend").
* ShoutOut:
** Nikita's dead fiancee is named [[Series/{{Alias}} Daniel]]. There was also a Russian spy (with a daughter!) called Irina.
*** The final two minutes of 2.10 are immediately identifiable to ''Series/{{Alias}}'' fans as either an homage or a blatant ripoff of the final two minutes of "Almost Thirty Years", right down to the [[spoiler: NotQuiteDead mother of our heroine, and a shocked "MOM?!".]]
** Birkhoff calls the black boxes Percy's [[Literature/HarryPotter Horcruxes]] in "Betrayals".
*** In a later episode, he refers to Ari as "Lord Voldemort".
** Apparently, [[MissionImpossible Tom Cruise in a harness]] couldn't break into the SCIF [[note]] [[http://en.wikipedia.org/wiki/Sensitive_Compartmented_Information_Facility Sensitive Compartmented Intelligence Facility]][[/note]] room in Langley.
** Birkhoff - played by [[Film/XMenTheLastStand Pyro]] - says he'll "fire up Cerebro".
** During the [[spoiler: assault on Birkhoff's house]] in "343 Walnut Lane" he yells "[[MedalOfHonor We're getting off this damn beach!]]" as he calls in an airstrike.
*** Afterwards, Birkhoff tells the others he'll meet up with them "[[StarWars on Tattooine, or wherever I set up the next rebel base.]]"
** When Sean suggests Division can use USAF assets to send Alex into Russia, she derides it as a [[Film/{{Captain America The First Avenger}} Captain America]] plan.
*** In the same episode, Birkhoff refers to Oversight as the [[StarWars Imperial Senate]].
** A Division Guardian mentions [[Film/CharlieAndTheChocolateFactory the Golden Ticket]] when Nikita asks him if he knows what the black box is. He does.
** Birkoff refers to Roan as "[[Film/{{Terminator}} the Terminator]]" after Alex has a run-in with him.
** Alex quips that revealing herself as Alexandra Udinov to the world is "like I'm about to tell everyone I'm [[Film/{{Iron Man}} Iron Man]] or something."
*** In the same episode, a foreign agent is introduced to a third party under the alias "Bill Clay," which is the same alias [[Film/DieHard Hans Gruber]] used when introducing himself to John [=McClane=].
** In "Power", after Nikita flirts with two guards and then knocks them out, she quips, "[[StarWars Boring conversation anyway]]."
** In "Shadow Walker" Division sends three trucks to deliver some money. Alex suggests that they see which truck is riding lowest "Hey, I [[TheItalianJob saw it in a movie once]]". Later, when Birkoff does just that, Micheal snarks "I guess Birkhoff saw the same movie".
** "Crossbow" turns into a 42-minute ShoutOut to StarWars. The old Star Wars missile-defense sytem is mentioned, Percy's KillSat (dubbed the Death Star by Micheal) is called Crossbow (Like Chewie's bowcaster), Birkoff tells Nikita "May the Force be with you". The final plan is a trench run to fire a torpedo down...sorry, have Nikita drop down the silo to blow the computer room. StarWars seems to be a favorite .
** Birkhoff does a [[DoctorWho Dalek]] impersonation while hijacking a sentry gun.
*** "I am Wade's servo gun. I now betray my overlord. Exterminate! EXTERMINATE!
** "Intersection" sees the cast in full snark mode: "Who watches the Watchman?"
*** [[{{TabletopGame/Clue}} "It was Baker. In the server room. With the candlestick."]]
*** [[StarWars "I'm on the leader".]]
** Birkhoff referring to a Shop's facility: "[[{{Area 51}} Area 50]] [[Literature/HarryPotter 3/4]]"
** In 1x19 "Girl's Best Friend", Nikita and Michael talk about how the plan of the week resembles that of the [[DieHard volksfrei movement]] a few years ago.
** In the Season 4 premiere, Birkoff snarks that Alex "thinks she's {{Franchise/Batman}}, which I guess makes my girlfriend {Sonya} {{Comicbook/Robin}}" while updating Nikita on the events since the end of Season 3.