Through the miracle of YouTube I was able to relive some of my young manhood and re-watch some of the hilariously-pretentious Calvin Klein "Obsession" commercials which were my inspiration for what High Concept tried to make Rarity use for her perfume campaign.
The original Obsession commercial from 1985. It's more logical than many of the later ones, though it's still surreal. Basically a romantic fantasy about lost love for an irresistible woman. This may have been closer to what High Concept originally pitched to Rarity:
This is the one that probably inspired the strange stage set High Concept used. It's a 1987 spot. Note the faux Escher-esque stairways, the strangely-severe clothing reminiscent of Interwar Futurism, and the insanely melodramatic way that everyone is acting. Here the woman is some sort of succubus-like creature drawing others on to destruction.
Here's the mock-trial from 1989. I'm guessing that the Equestrian version would have involved somepony obviously meant to be Princess Luna before the judgement of some Celestia look-alike, leading to Princess Twilight having to persuade her not to toss High Concept into a dungeon for lese-majeste:
This one, starring a very anorexic Kate Moss, implies that if you wear Obsession for men, you will be stalked by an insane waif-girl. I'm guessing this feeds into some sexual fantasy or other. It's better than High Concept's spot:
Thank you again, YouTube!