What the USS Reliant was supposed to look like in the movie Star Trek II: The Wrath of Khan.
Producer Harve Bennett look at the design upside-down and approved that. In movie-making, you don't question the boss; you just do it. So they made it with the nacelles hanging below, not overhead. (For this image, I just flipped a Reliant image upside down. I think it looks much more menacing!)