* 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}}''.
** In "Identity Crisis" (S4E6), amongst the "questionable government programs" that Mozzie lists is the "Series/{{Stargate|SG1}}".
*** Well, seeing as Mozzie is played by ''SG-1'''s Martin Lloyd, he would know.
* TheCastShowoff: In "Countermeasures", Diahann Carroll and Matt Bomer doing a lovely rendition of "One for My Baby (and One More for the Road)", accompanied by Billy Dee Williams on the piano.
* 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.
* ExecutiveMeddling: Defied in Season 5 & 6. Tim DeKay and Matt Bomer are producers as well as the lead actors, so, after knowing the show for 4 years, would be less likely to make poor decisions for the show.
* FakeAmerican: Mancunian Marsha Thomason as Diana Barrigan, who incidentally goes undercover [[HowsYourBritishAccent as a Mancunian]] for fellow FakeAmerican Jayne Atkinson in "Deadline."
* PlayingAgainstType: Creator/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 HappilyMarried, and Marsha Thomason isn't gay.
* TropeNamer for:
** TheBeCarefulSpeech
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