I thought that episode was original, until...

[The Laughing Vulcan]

^Is that the one where Magnum kills Ivan?

Don't think so, I got the reference from the audio commentary for Naka Jima Kill. They're both episodes about a cross-dressing assassin, if that's any help.

 

[Argus Skyhawk]

Actually, I find it amusing to see so many stories using the title "The Enemy Within." In TV and literature.

And "Tabula Rasa".

I was just thinking of Tabula Rasa too.

I'm also reminded that ST:TNG, Buffy, and Lost all had episodes in which a character is led to believe that he or she is actually hallucinating the whole series and is really a patient in a mental hospital.

 

[Agent Richard07]

^ DS9 did the same but had a rather unusual take on the idea with Sisko/Benny Russell.

 

[Nerys Myk]

Mudd's Women" is a variation on the Mail Order Bride trope". Elaan of Troyius" is a close cousin of that trope as well.

 

[Forbin]

Wasn't Elaan "Taming of the Shrew"?

 

[Forbin]

^Didn't Harrison lose that case and had to pay them royalties?

Had to look it up on wiki. Yes, but MAN, was it complicated case! In part:

Bright Tunes Music v. Harrisongs Music finally went to the United States district court on 23 February 1976, to hear evidence on the allegation of plagiarism.[17][94] Harrison attended the proceedings in New York, with a guitar, and each side called musical experts to supports its argument.[91] As author Dominic Pedler notes, both of the songs have a three-syllable title refrain ("My sweet Lord", "He's so fine") followed by a 5-3-2 descent of the major scale in the tonic key (E major for "My Sweet Lord" and G major for "He's So Fine"); respective tempos are similar: 121 and 145 beats per minute.[97] In the respective B sections ("I really want to see you" and "I dunno how I'm gonna do it"), there is a similar ascent through 5-6-8, but the Chiffons distinctively retain the G tonic for four bars and, on the repeat of the motif, uniquely go to an A-note 9th embellishment over the first syllable of "gonna".[52] Harrison, on the other hand, introduces the more complex harmony of a relative minor (C#m), as well as the fundamental and distinctly original slide-guitar motif.[52] After reconvening in September 1976, the court found that Harrison had "subconsciously" copied the earlier tune, since he admitted to having been aware of the Chiffons' recording.[98]
With liability established, the court then recommended an amount for the damages to be paid by Harrison and Apple to Bright Tunes, which Judge Richard Owen totalled at $1,599,987[99] – amounting to three-quarters of the royalty revenue raised in North America from "My Sweet Lord", as well as a significant proportion of that from the All Things Must Pass album.[17] This figure has been considered over-harsh and unrealistic by some observers,[100] since it both underplayed the unique elements of Harrison's recording – the universal spiritual message of its lyrics, the signature guitar hook, and its production – and ignored the critical acclaim his album received in its own right.[17][101] Elliot Huntley observes: "People don't usually hear a single and then automatically go and buy an expensive boxed-set triple album on the off-chance."[102] The award factored in the royalty revenue raised from "My Sweet Lord"'s inclusion on the recent Best of George Harrison compilation, though at a more moderate percentage than for the 1970 album.[17]
The ruling set new legal precedents and was a personal blow for Harrison, who admitted he was too "paranoid" to write anything new for some time afterwards.

 

[Nerys Myk]

Wasn't Elaan "Taming of the Shrew"?

Yes, but she's also a "mail order bride" of sorts. I was going mention she was part of the Shrew Taming trope as well, but decided to let someone else go for that one.

 

[Gov Kodos]

Wasn't Elaan "Taming of the Shrew"?

Yes, but she's also a "mail order bride" of sorts. I was going mention she was part of the Shrew Taming trope as well, but decided to let someone else go for that one.

And an inversion of the Trojan war with Elaan/ Helen being taken from Elas/Hellas (The Greeks) to Troyius/Troy to stop the war rather than cause it as in Homer.

 

[theenglish]

There are a number of broad concepts that Trek uses more than once and across shows such as split personality, a crew member invisible/dimensional shifted so the others can't seem him/her, time travel, hallucination or dream episodes, computers/virus vs. the crew, etc.

Other genre shows use these broad concepts often as well, but I don't think anyone ever claims that they are original ideas. They have become a staple of such programs. At some point your space crew or main characters in a scifi/fantasy show are going to come across one of these stories.

 

[Warped9]

Wasn't Elaan "Taming of the Shrew"?

Yes, but she's also a "mail order bride" of sorts. I was going mention she was part of the Shrew Taming trope as well, but decided to let someone else go for that one.

The basic idea of Elaan can be seen throughout history where a marriage is arranged to hopefully establish peace between two warring states or nations.