Blooper: Like many 80s' cartoons with a large cast, the Pony segments had their fair share of bloopers, from characters saying each other's lines to eye or hair miscolorations to earth ponies and unicorns with wings.
Dawson Casting: Surprisingly averted with The Potato Head Kids. Most of the kids are actually kids.
Comic book author Gerry Conway, the man who created the Punisher, worked on this show.
Michael Reaves, too. He wrote several episodes of the show and would later become known as a producer and story editor and writer on such series as Batman: The Animated Series and Gargoyles.
Roger C. Carmel, best known for Harry Mudd, is the voice of Zeb.
Hey, It's That Sound!: People who watched all four segments have probably caught onto the fact that the show just reused it's music score for all four of them. Only the songs were different for each segment.
TheGlo Friends, Moondreamers, and Potato Head Kids segments, anyway. The My Little Pony segments have gotten official DVD releases from Rhino and Shout! Factory, the latter of which can still be bought to this day.
Not only that, but this trope has been in effect since before the 80s ended. Not only have the other segments not received their DVD releases, but only the Pony segments got reaired in the Second-run syndication of the show on the Disney Channel.
Missing Song: "The Glass Princess" originally contained the song "Hurry", which has not been re-released or repeated since 1986. Even within fan circles, only an audio copy and lyrics are known to exist.
Recycled Script: You'd be amazed how often "[X] Land is in danger because villain(ess) [Y] did [Z]. Now [Insert Characters of Appropriate Segment Here] must stop the villain before [Segment Setting] enters the apocalypse" cropped up.
Talking To Herself: At times it's a one-woman show for Jeannie Elias, Katie Leigh, Jennifer Darling, or Nancy Cartwright. As far as the latter is concerned, it's a little disconcerting hearing an earlier version of Bart Simpson's voice coming out of a unicorn.note For viewers who are only familiar with her work in The Simpsons, anyway.
The Other Darrin: In "The End of Flutter Valley", Hydia is voiced by Tress MacNeille instead of Cloris Leachman, who voiced her in the movie. Similarly, her daughters Reeka and Draggle are both voiced by Jennifer Darling, instead of their theatrical voice actors Rhea Perlman and Madeline Kahn respectively