The Mirror Universe is an obvious recurring... thing in the different iterations of ST
Are there other recurring ones?
How about loosely "inspired by"?
For example, I submit TNG:Yesterday's Enterprise was inspired by MU, and That TNG: Encounter at Farpoint (mostly Q) was inspired by TOS:The Squire of Gothos.
I know there's more...
Are there other recurring ones?
How about loosely "inspired by"?
For example, I submit TNG:Yesterday's Enterprise was inspired by MU, and That TNG: Encounter at Farpoint (mostly Q) was inspired by TOS:The Squire of Gothos.
I know there's more...
