Crosses the Line Twice: The destruction of Alderaan? Not funny. Darthenshmirtz in the foreground of said destruction, upset that the worth of his time share on Alderaan has suddenly dropped to zero? Hilarious.
Jar Jar is mentioned as having retired, but Aftermath: Empire's End reveals that he was booted off the Senate for giving Palpatine the emergency powers that allowed Palpatine to turn the Galactic Senate into the Empire, got exiled from Otoh Gungan again and is currently living at a refugee center on Naboo, working as a clown and feeling immensely guilty for what he did.
Hilarious in Hindsight: Surprisingly, the special predicted a lot of details about the direction of the Star Wars franchise, seventeen months before The Force Awakens hit theaters:
Phineas and Ferb's multi-branched lightsabers, especially given the Memetic Mutation the trailer of The Force Awakens caused after seeing Kylo Ren's crossguard lightsaber. Rebels also introduces the Inquisitor lightsabers, which are lightsabers that can turn into double-bladed lightsabers which can spin, similar to how one of Ferb's lightsabers spins.
It seems that Ferb still has some Dark Side in him, since the person who voices him, Thomas Brodie-Sangster, makes a cameo as First Order Officer Thanisson in The Force Awakens.
The vulnerability in the Death Star is explained as it being based on one of Darthenshmirtz's inventions, and like his main show counterpart always does he included a self-destruct device by design. Rogue One established that the designer doing it on purpose actually is the canon explanation, though for reasons beyond incompetence.
A young girl from a multi-ethnic background who is also a badass space pirate who clashes with Han Solo and inadvertently helps him recover his need to do the right thing and help the Rebel Alliance: Captain Isabella of the Centennial Chihuahua or Efrys Nest from Solo?
Magnificent Bastard: Darth Ferb is created when the heroic Ferb is blasted by Darthenshmirtz's Sith-inator. Immediately upgrading and outfitting the Sith-inator to galactic-wide proportion, Darth Ferb offers Phineas a chance to join him in creating an entire army of Sith. When Phineas rejects his offer, Darth Ferb expertly tricks out his lightsabers on the fly to duel and overcome Phineas with all manner of trickery. Even when Candace and Perry intervene, Darth Ferb's mastery of the Force enables him to near-victory, and he is only barely beaten after cleverly destroying Phineas's lightsaber to leave the boy powerless.
Nausea Fuel: Buford eats the hoagie after it was drenched in sewage.
Take That, Scrappy!: When two Rebel Soldiers find R2-D2 without the disc containing the plans for the Death Star, one of them suggests they "blame Jar-Jar".
