Derpy Hooves, the fan-favorite pegasus with crazy eyes, can be seen a few times in the audience with her eyes not walled during the medal ceremony between 20:39 and 20:53.
Friendship Report: Twilight learned friendship isn't easy, but it's worth fighting for.
Clips from "Bridle Gossip", "A Dog and Pony Show", "The Cutie Mark Chronicles", "Applebuck Season", "Friendship is Magic, part 2", "Winter Wrap Up", and "Fall Weather Friends" are shown as Twilight is reading her friendship reports.
The friendship reports that Twilight is reading out loud are from "Bridle Gossip", "Over A Barrel", and "The Cutie Mark Chronicles".
The ceremony at the end is a complete shot-by-shot recreation of the ceremony at the end of Star Wars: Episode IV - A New Hope (1977).