Part 10: The Invader of Fort Duckburg: Scrooge's sister (and eventually Donald Duck's mother) Hortense chasing off a cavalry charge by herself.
What of Scrooge and Goldie's story back in his Klondike days isn't heartbreaking is absolutely hilarious. See: the "rescue" during the burning saloon scene in "Hearts of the Yukon".
Part 7: The dreamtime duck of Never-Never:
Narrator: At this moment, young Scrooge is on the absolute opposite side of the planet from his Scottish home. (panel showing fish underwater) Narrator: Well, no, that would be in the Pacific Ocean, south of New Zealand, actually...