To preface this, I have two young daughters. They borrowed this video from a friend, and I was surprised at how good it was. To be fair, the others in the series aren't nearly as good, but this one, for whatever reason, is magical:
Barbie: The Princess and the Pauper
The story is decent, the songs are extremely memorable, witty, and memorable, and the villain, Preminger, is voiced by Martin Short who does a fantastic job.