* ActorAllusion
** Graham Phillips' character in "Upper West Side Story" is named [[{{Theatre/Thirteen}} Evan.]]
** Peter refers to Keller as "Bizarro Neal", a wink to Tim [=DeKay=]'s portrayal of "Bizarro Jerry" on ''{{Series/Seinfeld}}''.
** The waitress played by Diane Farr in "By the Book" decided to move to [[{{Series/Numb3rs}} California for a new job.]]
*** And one of the main characters on each show is an FBI agent who was once a [[spoiler:professional baseball player]].
** This isn't the first time Matt Bomer and ElizaDushku [[TruCalling have been sharing screentime...]]
* DirectedByCastMember
** Tim Matheson both played the Villain of the Week for and directed "Withdrawal", the second season premiere.
** Tim [=DeKay=] directed "Stealing Home" in the third season.
** Andrew [=McCarthy=], who played Vincent Adler, directed "Neighborhood Watch," also in the third season.
* FakeAmerican: Mancunian Marsha Thomason as Diana Barrigan, who incidentally goes undercover [[HowsYourBritishAccent as a Mancunian]] for fellow FakeAmerican Jayne Atkinson in "Deadline."
* HeyItsThatGuy: [[Series/{{Chuck}} Matt Bomer]], [[Series/SavedByTheBell Tiffani]] [[BeverlyHills90210 Thiessen]], [[Series/TheMiddleman Natalie Morales]], MarkSheppard, [[Series/{{Carnivale}} Tim DeKay]], [[Series/TheSarahConnorChronicles Garret]] [[{{Life}} Dillahunt]], [[SexAndTheCity Willie Garson]], [[{{Series/Fringe}} Kirk]] [[{{Series/Oz}} Acevedo]] and [[Series/LasVegas Marsha Thomason]].
** [[Series/TheBlackDonnellys Tommy Donnelly]] apparently left Hell's Kitchen and became a corrupt stock broker.
** [[Series/BurnNotice Larry]] (yes, [[RunningGag Dead Larry]]) a.k.a. Tim Matheson plays the SmugSnake bad guy in the second season opener.
** [[Film/BennyAndJoon Aidan]] [[LegendsOfTheFall Quinn]] guest stars as a criminology professor in episode 2.03, "Copycat Caffrey".
** [[{{Series/Numb3rs}} FBI Special Agent Megan Reeves]] (Diane Farr) is a disappearing coffee shop waitress in episode 2.04, "By the Book."
** [[Film/PercyJacksonandtheOlympians Annabeth Chase]] is Kate.
** [[Series/LawAndOrderSpecialVictimsUnit Casey Novak]] was Agent Kim Rice.
** [[Series/{{Eureka}} Henry]] is Peter's boss's boss.
** [[Series/TheDresdenFiles Harry Dresden]] [[spoiler: shoots Mozzie]] in the season 2 half-finale.
** [[Series/TheUnit Mack Gerhardt]] as a dirty US Marshall in Season 2.
** [[Franchise/StarWars Lando Calrissian]] himself in "Countermeasures", as an old friend of June's.
** [[Series/BurnNotice Simon]] as a gold thief.
** [[Series/BandOfBrothers Liebgott]] is Matthew Keller.
** [[Series/TwentyFour Jayne]] [[Series/CriminalMinds Atkinson]] plays an Anna Wintour (or is that [[TheDevilWearsPrada Miranda Priestly]]?) {{expy}} in "Deadline."
** [[OneTreeHill Peyton Sawyer]] as a sexy Repo Woman.
** And her dad [[OneTreeHill Larry Sawyer]] ([[TheOtherDarrin The second one]]) as Agent Roe, Investigative Committee Chair.
** [[GossipGirl Bart Bass]] as an Irish mob boss.
** And speaking of ''GossipGirl'', Lady Katherine as a BlackWidow in "Veiled Threat".
** Vincent Adler was [[GossipGirl Lily's father and Serena's grandfather]] in GG's FlashbackEpisode / PoorlyDisguisedPilot.
** Lady who helped bank robbers in "Withdrawal" is [[GossipGirl Anne Archibald, Nate's mother]].
** [[Series/GameOfThrones Queen Cersei]] knows a thing or two about hacking computers. Of course, she also happens to be [[TheSarahConnorChronicles John Connor's mother]], which would explain that.
** The casting department must really love ''GossipGirl''. Taryn, the art expert from "The Portrait", was also KC, Chuck Bass's publicist.
*** Probably because both series are [[OnlySoManyEquityMembers filmed in]] [[BigApplesauce New York]].
** Who knew [[Series/BuffyTheVampireSlayer Faith]] was into Egyptology?
** And she reunites with [[TruCalling Luc!]]
** Robin Hoodie is [[Series/ZekeAndLuther Zeke]].
** [[{{Series/Leverage}} Sterling]] was the first criminal busted by Burke and Caffery
** [[Series/TheWestWing Toby Ziegler]] causes blackouts in NY for profit.
** Apparently, [[{{Theatre/Thirteen}} Evan]] moved back to New York to go to Manhattan Prep.
** Bringing [[{{Theatre/Thirteen}} Lucy]] with him.
** [[Series/BlueBloods Sergeant Renzulli]] is a CorruptCorporateExecutive.
** [[TheWestWing Ainsley Hayes]] moved from [[CSIMiami Miami]] to New York to be the new boss.
** Neal, you're lucky [[Series/LegendOfTheSeeker Kahlan]] didn't Confess you after you got her fired.
* PlayingAgainstType: LizGillies as the very kind and friendly Chloe Woods, in contrast to her previous mean girl roles on ''{{Theatre/Thirteen}}'' and ''{{Series/Victorious}}''.
* RealitySubtext: Neal discussing the sudden availability of gay marriage with Diana has elements of this, as Matt Bomer is gay (and would be quite HappilyMarried if California allowed it), and Marsha Thomason isn't.
* TropeNamer for:
** TheBeCarefulSpeech
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