Sailor Senshi Shuuketsu, which first plays as Sailor Moon goes to face Beryl alone with the other Senshi dead in the traps of the DD Girls.
The dub also gave us "My Only Love," which makes the scene where the Moon Princess is revealed.
The dub did this a few times. Even the most purist of fans admit that "Carry On", "My Only Love", "A New Day", and a few others fit the scenes just as well, and in some cases better, than the original.
Golden Queen Galaxia, the image song for the villain of the last season, is somehow good enough to make xylophones sound badass. It sounds heartbreaking yet great when slowed down into an "orgel locket" version, too.
The famous, yet unnamed piano song from episode 110, featured when the Inners think of the Outers and are depressed as they realize how different they are, while Michiru comforts a doubtful Haruka. Here in a 100% piano version (all the videos including the scene itself seem to be gone.)