History YMMV / StarTrekTheNextGenerationS4E11DatasDay

* HarsherInHindsight: Lt. Stiles's fears about Romulan spies being in the Federation turn out to be [[Recap/StarTrekS1E14BalanceOfTerror completely justified.]]

* HarsherInHindsight: Lt. Stiles's fears about Romulan spies being in the Federation turn out to be [[Recap/StarTrekS1E14BalanceofTerror completely justified.]]

* MagnificentBastard: Subcommander Selok is a [[DeepCoverAgent Romulan spy]] who poses as a Vulcan diplomat named T'Pel in the Federation and Admiral Mendak is secretly her commanding officer. Selok has been gathering intelligence and secrets within the Federation for years and when she needs to be extracted, Mendak contacts the Federation and claims to want to sign a peace treaty if "T'Pel" negotiates it. Picard meets Mendak in the Neutral Zone and he agrees to bring T'Pel aboard his ship to begin the peace talks. T'Pel is seemingly [[FakingTheDead killed in a transporter accident]], but in reality, Mendak sends a second transporter signal and beamed Selok aboard his ship, leaving fake remains in her place. Data discovers that remains are fake and Picard confronts Mendak, resulting in Mendak revealing that T'Pel is Selok and Mendak summons several other Romulan ships to force the Enterprise to retreat. Selok and Mendak are among th

* FridgeHorror: Had the crew of the ''Enterprise'' not discovered suspicious evidence regarding the transporter accident and confronted Admiral Mendak about it, they might never have learned about the "dead" ambassador having been a Romulan spy. Not only would the spy have gotten away with it (as she did in the episode), ''the Federation would never have known about it.''

* FridgeHorror: Had the crew of the ''Enterprise'' not discovered suspicious evidence regarding the TransporterAccident and confronted Admiral Mendak about it, they might never have learned about the "dead" ambassador having been a Romulan spy. Not only would the spy have gotten away with it (as she did in the episode), ''the Federation would never have known about it.''

* HilariousInHindsight: Dr. Crusher says she doesn't want to be known as "The Dancing Doctor" again. Some time later, we have [[Recap/DoctorWhoS27E10TheDoctorDances another Doctor dancing.]]

* FridgeHorror[=/=]InferredHolocaust: The Romulans had a spy masquerading as an ambassador who gets away unscathed. Who knows what vital secrets she might have brought back? It is brought up in "The Drumhead" later that season.

* TheWoobie: Despite the [[HappyEnding happy ending]], this Data’s day was [[NotMyLuckyDay not going to be a lucky one]] for Miles O’Brien. Keiko has canceled their wedding and someone has apparently been killed in a transporter accident.

* HilariousInHindsight: Dr. Crusher says she doesn't want to be known as "The Dancing Doctor" again. Some time later, we have [[http://tvtropes.org/pmwiki/pmwiki.php/Recap/DoctorWhoS27E10TheDoctorDances another Doctor dancing.]]