Just yesterday, we were watching the Voyager episode State of Flux, and I thought about how subtle and nicely done the nod to DS9's Second Skin is, which aired a few months earlier. (You know, the whole business with Cardassians going undercover posing as Bajorans.)
Which in turn got me thinking how clever it was to have the Enterprise two-parter In a Mirror Darkly be both a prequel to Mirror, Mirror and a sequel to The Tholian Web - circles within circles.
Are there any other subtle, cool and/or clever interseries crossovers you can think of?
(And I'm not talking about the way the Maquis storyline weaved through TNG and DS9 and back to TNG to set up Voyager. Good episodes, all in all, but there was too much planning and calculation involved for it to be considered "nicely done".)
Which in turn got me thinking how clever it was to have the Enterprise two-parter In a Mirror Darkly be both a prequel to Mirror, Mirror and a sequel to The Tholian Web - circles within circles.
Are there any other subtle, cool and/or clever interseries crossovers you can think of?
(And I'm not talking about the way the Maquis storyline weaved through TNG and DS9 and back to TNG to set up Voyager. Good episodes, all in all, but there was too much planning and calculation involved for it to be considered "nicely done".)