Hades and Maleficent finally going on their date in "Halloween For Hades", especially considering how hard he was trying to impress her, and how genuine his affections for her were. There's someone out there for everyone, even the bad guys.
Mickey: Even if you're the hot-tempered lord of the underworld, it's always best to be yourself.
The ending to "Not So Goofy", where Mickey and the staff apologize to Goofy for wanting him to be "un-goofy" and tell him they liked him better as his goofy self.
Donald's price for giving Mickey the money needed to pay the rent: let Daisy perform during the show.
Ludwig von Drake's song in "Ask von Drake" mentions (and features) Roy Disney (Walt's nephew).
In the Mouse Tales adaptation of Around the World in Eighty Days, when it appears Mickey, Minnie and Goofy didn't make it in time, Mickey decides to help his friends by telling Minnie to go to the dance without him and Goofy to pawn his watch for cash. The two of them refuse his offers and tell him that their friendship is more important.
Goofy: I'm your friend, Mickey, and that don't cost you a penny.